The Camp Logan Mutiny (also called the Houston Riot of 1917) was a reaction by 156 soldiers of the Third Battalion of the all-black Twenty-fourth United States Infantry Regiment after members of the Houston Police Department harassed members of the local black community and the black soldiers who attempted to intervene were also violently accosted. It took place over a single night, and resulted in the deaths of 11 civilians, five policemen, and four soldiers. The soldiers were tried at three courts-martial for mutiny. Nineteen were executed, and 41 were sentenced to life imprisonment.
(Scope and content: The full caption for this item is as follows: Largest Murder Trial in the History of the United States. Scene during Court Martial of 64 members of the 24th Infantry United States of America on trial for mutiny and murder of 17 people at Houston, Texas August 23, 1917. Trial held in Gift Chapel Fort Sam Houston. Trial started November 1, 1917, Brigadier General George K. Hunter presiding. Colonel J.A. Hull, Judge Advocate, Council for Defense, Major Harvy S. Grier. Major D.V. Sutphin, Assistant Advocate. Prisoners guarded by 19th Infantry Company C, Captain Carl J. Adler.)
https://en.wikipedia.org/wiki/Houston_riot_of_1917
