You choose to riot, you may get shot. I wonder who told these folks that Free Speech meant you could do what you want, including rioting.
Blacks did not riot, I think you misunderstand. The Greenwood district of Tulsa, known at the time as 'Black Wall Street' because it was a financial area, was gutted and several black Tulsans were killed in the Tulsa Race Riots of 1912. The perpetrators were white and got away with it scot-free. It is genuinely an ugly event in Tulsa's history, and not something to excuse lightly.
None of that means that reparations paid to individuals are in order, but that is another issue.