Yeah, those people in the 50s who fought against desegregation just had a different personal opinion on what was okay. Nothing wrong with that!

Hundrends of millions of people had similar opinions in the 50s -- they didn't know better. Do you propose they all got fired?

Even if you do. I don't recall that being the case historically, anyway. Instead, black and pro-civil rights people fought for their rights, with marches, public speeches, voting, and such. Not with campaigns targeted at individual people. The KKK used to do that.