The Los Angeles Chinese massacre of 1871 was a racial massacre targeting Chinese immigrants in Los Angeles, California, United States that occurred on October 24, 1871. Approximately 500 white and Latino Americans attacked, harassed, robbed, and murdered the ethnic Chinese residents in what is today referred to as the old Chinatown neighborhood. The massacre took place on Calle de los Negros, also referred to as "Negro Alley". The mob gathered after hearing that a policeman and a rancher had been killed as a result of a conflict between rival tongs, the Nin Yung, and Hong Chow. As news of their death spread across the city, fueling rumors that the Chinese community "were killing whites wholesale", more men gathered around the boundaries of Negro Alley.

A few 21st-century sources have described what followed as the largest mass lynching in American history.Erika Lee, "Review of The Chinatown War: Chinese Los Angeles and the Massacre of 1871 (2012), by Scott Zesch", Journal of American History, vol. 100, no. 1 (June 2013), p. 217. Nineteen Chinese immigrants were killed, fifteen of whom were hanged by the mob in the course of the riot. At least one, Dr. Chee Long "Gene" Tong was mutilated when a member of the mob cut off a finger to obtain the victim's diamond ring. Those killed represented over 10% of the small Chinese population of Los Angeles at the time, which numbered 172 prior to the massacre. Ten men of the mob were prosecuted and eight were convicted of manslaughter in these deaths. The convictions were overturned on appeal due to technicalities.

Summary The Los Angeles Chinese massacre of 1871 was an act of mob brutality that resulted in the murder of eighteen Chinese residents. The massacre's immediate cause emanates from a conflict between rival Huiguan, the Nin Yung, and Hong Chow.

The day before the massacre, Won Choy attempted to kill Yo Hing for the abduction of his sister, Yut Ho. The following day, another skirmish occurred, and this time, Won Choy received a fatal gunshot wound to the neck. Officer Jesus Bilderain responded to the scene and was shot inside the Coronel building while attempting to arrest one of the gunmen. Several civilians assisted the police, including a farmer named Robert Thompson who was shot in the chest. Soon after, the Sheriff arrived and deputized a group of men with instructions to guard the Coronel building and prevent any occupants from escaping. Thompson was taken to an apothecary on Main Street where he died two hours later. Following the news of Thompson's death, residents of Los Angeles started to congregate around the Coronel Adobe. Members of the crowd shot at the doors and windows of the building. At nine o'clock p.m., a door was battered down, and the occupants were dragged outside and towards makeshift gallows. According to reports, some in the crowd tried to calm the group and preclude the slayings, including Robert M. Widney, who would go on to become the district judge presiding over the subsequent trials. The massacre ended around 9:30 pm, when the Sheriff "called for twenty-five armed volunteers on the side of law and order to preserve the peace and guard the building until this morning."

The Coroner's inquest resulted in forty-nine indictments, containing the names of one hundred and fifty individuals. Seven men were convicted of manslaughter and received sentences ranging from two to six years in prison. However, an appeal to the California Supreme Court reversed the convictions and remitted the cases back to Widney's court. District Attorney Cameron E. Thom decided against retrying the cases and freed the accused in the spring of 1873.

Background In 1854, the California Supreme Court established that Chinese Americans and Chinese immigrants had no rights to testify against white citizens, making them vulnerable to abuse and injustice. In 1868 the United States had signed the Burlingame Treaty with the Chinese Empire, setting conditions for immigration.Paul M. De Falla, "Lantern in the Western Sky" , The Historical Society of Southern California Quarterly, 42 (March 1960), 57–88 (Part I), and 42 (June 1960), 161–185 (Part II). In this period, most Chinese workers who immigrated to the United States were men, intending to stay only temporarily. The small Chinese community in Los Angeles numbered fewer than 200, and 80% were men.

Another factor was the rough frontier nature of Los Angeles, which in the 1850s had a disproportionately high number of lynchings for its size, and an attachment to "popular justice" (this was also a period of violence across the country).Paul R. Spitzzeri, "Judge Lynch in Session: Popular Justice in Los Angeles, 1850–1875" , Southern California Quarterly Vol. 87, No. 2 (Summer 2005), pp. 83–122 It attracted transients from across the country, and alcohol use was high among the predominately male population.

In Los Angeles in the few days preceding the riot, two Chinese Tong factions, known as the Hong Chow and Nin Yung companies, had started a confrontation from a feud over the alleged abduction of a Chinese woman named Yut Ho (also documented as Ya Hit), who was announced in the paper as having married. Due to a lack of women in the Chinese community, most women in the community served as prostitutes and had essentially been sold into sexual slavery. Previously the police department had assisted the Tongs in keeping their confrontations over the women internal to the community, and sometimes capturing and returning women who had escaped, in exchange for payment by the Tongs, but in this case, things got out of hand. Two Chinese men were arrested for shooting at each other, and were released on bail, but the police kept watch on the Old Chinatown neighborhood. It had developed along Calle de los Negros, which was named in the colonial period.Scott Zesch, "Chinese Los Angeles in 1870–1871: The Makings of a Massacre" , Southern California Quarterly, 90 (Summer 2008), 109–158

Calle de los Negros

Calle de los Negros was situated immediately northeast of Los Angeles's principal business district, running from the intersection of Arcadia Street to the plaza. The unpaved street was named by Spanish colonists for Californios (pre-annexation, Spanish-speaking Californians) of darker complexion (most likely of multiracial ancestry: Spanish, Native American, and African) who had originally lived there. The neighborhood had deteriorated into a slum by the time the first Chinatown of Los Angeles developed there in the 1860s.

Early 20th-century Los Angeles merchant Harris Newmark recalled in his memoir that Calle de los Negros was "as tough a neighborhood, in fact, as could be found anywhere."Harris Newmark, Sixty Years in Southern California, 1853–1913 (1916; 4th ed., Los Angeles: Dawson's Book Shop, 1984), 31. Los Angeles historian Morrow Mayo described it in 1933 as:

Sing Yu's abduction, torture, and legal battles On October 14, 1870, a Chinese prostitute named Sing Yu was abducted from Los Angeles. Her owner, Sing Lee, of the See Yup company, posted a reward of $100 for her return. (This was the second time Sing Lee offered a reward for Sing Yu. She had been abducted previously on August 25, and recovered the same day.) Both the City Marshal, William C. Warren, and Constable Joseph G. Dye ascertained Sing Yu had been taken to San Buenaventura. Marshal Warren pursued Sing Yu to San Buenaventura. However, before Warren arrived, the Marshal of San Buenaventura arrested Sing Yu on information telegraphed by Officer Dye. Marshal Warren took possession of Sing Yu in Ventura, and returned her to Los Angeles on the morning of October 31. Warren and Dye both claimed to be entitled to the reward for Sing Yu. That afternoon, both Warren and Dye attended a hearing in Justice Trafford's Court. Following the hearing, Dye confronted Warren in the street and accused him of stealing the reward. Warren, anticipating a conflict, had a Derringer concealed behind his back, in his left hand. While arguing with Dye, Warren threw forward his left hand and fired his pistol at Dye's head. Warren's shot was ineffective, and both men then drew revolvers and started firing at one another. Warren was shot in the groin, and died the following day.

During this period, the See Yup Company divided into three; Hong Chow Company, headed by Yo Hing, the Nin Yung Company, headed by Sam Yuen, and the Hop Wo Company.

Sing Yu was released from jail on November 5. Three days later, Sing Yu was rescued from a group of five Chinese men who were discovered torturing her on the outskirts of San Bernardino. Sing Yu had been suspended over a fire and her legs & abdomen burnt, and her back cut lengthwise in several places. The five men, members of Yo Hing's company, were arrested and indicted for attempted murder. The following day, Yo Hing swore out a warrant against a resident of San Bernardino named Que Ma. Yo Hing accused Que Ma of stealing a horse two years prior. Que Ma was arrested in San Bernardino by Officer Dye, and brought to Los Angeles on November 12. While Que Ma was being held in custody in Los Angeles, the five men involved in the torture of Sing Yu were tried, and four were found guilty of an assault to do great bodily injury. Ah Chu, Ah Yok, Lee Jung, and Wang Hing were each sentenced to pay a fine of $500 each, or in default, to spend two years in the State Penitentiary. On November 29, the case against Que Ma was dropped since no witnesses appeared against him in court. On his person was found a summons from the County Court of San Bernardino requiring his presence at the torture trial that had already concluded. Yo Hing was required to pay the cost of the Que Ma's trial.

On December 8, Sing Yu filed a complaint against Lee Woo, of Anaheim, for grand larceny; it is possible this complaint was related to the abduction that occurred on October 14. Lee Woo was arrested on December 17, and a trial was scheduled for December 23 in Justice Gray's Court. However, the evening before the trial, the Deputy Sheriff of Santa Barbara county arrived in Los Angeles and arrested Sing Yu on a charge of grand larceny. The Deputy Sheriff, along with Deputy US Marshal Dunlap, arrested Sing Yu in Negro Alley and placed her in a carriage belonging to city councilman George Fall. A group of men, belonging Yo Hing's company chased the carriage and caught up to it at Commercial street. Yo Hing's men fired four shots into the carriage, hitting a Chinese man named Wan, and killing one of the horses. The carriage escaped, and four of Yo Hing's men were arrested. The following day, the Los Angeles Daily Star reported the men convicted of torturing Sing Yu in San Bernardino were discharged from San Quentin, their charges having been overturned by the State Supreme Court.

In January 1871, Wong Heng, a wash house owner from San Bernardino, and his wife were passing through Los Angeles, on their way to China via San Francisco. Upon their arrival in Los Angeles, Yo Hing accused Wong Heng of having informed on the four Chinese men that roasted Sing Yu, and demanded Wong Heng compensate him. Wong Heng refused. The following day, Wong Heng and his wife got on the cars to leave for San Francisco. However, before the cars departed, Wong Heng and his wife were arrested on a complaint made by one of Yo Hing's agents. Additionally, another of Yo Hing's agents, Lee Yee, filed a suit against Wing Heng, using a forged contract that purported to show Wong Heng borrowed $600, and agreed to repay the amount before returning to China. All of Wong Heng's money was confiscated by the jailer, Frank Carpenter, until the cases could be settled.