 The turmoil came to a boil during a summer heat wave with the murder of Eugene Williams, an African-American child who inadvertently drifted into a white swimming area at an informally segregated beach near 29th Street.One white beachgoer, indignant, began hurling rocks at Williams, causing the teen to drown.The official coroner’s report cited that Williams drowned because the stone throwing kept him from coming to shore.