Six others were killed and many injured when a gunman, perched atop a building, opened fire on a holiday parade.
Straus, a vice president at the Chicago area firm, was a “gentle, warm hearted” man and an “ambassador of the office,” according to firm CEO Ron Kruszewski. Cynthia Straus, Stephen’s niece, wrote on Facebook that this was a “tragic, senseless loss” and that “NO ONE should die this way.”