Updated at 9:40 p.m. with additional details — Hundreds of “white allies” marched in the streets downtown on Thursday. Their aim was to demonstrate broadening support for the protest movement sparked by a judge’s decision to acquit a former police officer of murder. For more about 90 minutes, a crowd of predominantly white demonstrators expressed solidarity with African-Americans. For the past week, many have protested St. Louis Circuit Judge Timothy Wilson’s decision to find Jason Stockley, who is white, not guilty of murder in the 2011 death of Anthony Lamar Smith, a black man. Continuing the strategy of protest organizers to direct demonstrators' concerns toward those for whom systemic injustice is not an issue, the crowd marched from Kiener Plaza to Busch Stadium, where thousands had gathered for an 8 p.m. concert by singer Billy Joel.