I'll accept the call out, but based on the entirety of US history violence has often been the major deciding factor of political "discourse".
Either in acceleration of a cause or in suppression of it.
Let us look at the Bread and Roses Strike for example. The storming of the textile shops and the sabotage of the machines is a violent act that was countering the violent suppression by the police.
We can extend past the US to the UK, where the Cable Street Riot was the deciding factor in the decline of the black hat fascists in the country. At the time thousands of communists, socialists, anarchists, Jews and Irish brawling with fascists and then the police was considered A horrible offense to English decency but now the UK government honors it as a noble effort.
There is of course nuance to the situation, but at least here in the US the majority of our positive policies came often from rioting.
We are a nation after all defined by "All Men Created Equal" by a man who owned and trafficked men, women, and children. Therefore the idea of equality, both I'm people, and in actions, will always be considered suspect.
My two cents anyway.