Answer:The violence began on July 27, 1919, when a 17-year-old Black boy named Eugene Williams drowned in Lake Michigan. Eugene and some friends had been swimming at the segregated beach when a white man grew angry that the teens had drifted into the "white side" of the lake. The man threw a rock at the group, striking Eugene in the head, knocking him unconscious, and causing him to drown despite onlookers attempts to save him.