Non-violence only works with violence waiting in the wings. Talking with MLK is way more palatable when the other option is saying, "we are willing to pay the price of freedom and that price is death (for both of us)."
What does "not tolerating" mean? Excluding him from everything?
If that's the approach, what stops you from trying to get someone you don't like excluded by searching through everything they have ever said or done, surfacing one example that you call "objectionable", and using that to shame them?
Uh the bus protest was them riding the bus and continuing to ride the bus. You missed literally the entire events and purpose of one of the most well documented protest in history.