Complex sentence: The 1943 race riot in Beaumont, Texas, erupted on June 15 and ended two days later; attacks against blacks and their property were initiated by white workers from the Pennsylvania Shipyard in Beaumont following rumors that a white woman had been raped by a black man.
Split into simpler sentences: The 1943 race riot in Beaumont, Texas, erupted on June 15 and ended two days later. White workers from the Pennsylvania Shipyard in Beaumont attacked blacks and their property after hearing rumors that a white woman had been raped by a black man.