Well, MLK did say that a riot is the language of the unheard. And he deemed the white moderate is the greatest obstacle to freedom. How does that square with your understanding of the civil rights movement? We'd like to wishfully think that social change can be achieved without any fuss. It can't. Firing someone isn't thuggery. Or the barrel end of a gun. It is just an organization walking the talk.
Maybe this is a matter of semantics? Firing someone (ending a voluntary relationship) is legal and nonviolent, so I wouldn't call that "by force" either. You probably shouldn't use "by force" unless you mean it.
The civil rights movement included winning court cases, getting laws passed, and convincing politicians that they should support it. It didn't happen at a barrel of a gun.
More recently, same-sex marriage happened by winning court cases and a lot of work to change public opinion.
It's way too soon to give up on persuasion. Don't support thuggery.