Bullies who I have to deal with at work? I call them out. I learned to carry myself differently after being bullied by a really high-up guy on my college internship. I just said straight out to the man that if he had to come to our bullpen to pick on interns, then there’s a problem he needed to deal with.
Proselytizers I can’t be arsed with, either. “I’m seeking out my own soul’‘s salvation, and my faith is not up for discussion.”
Other people, like on the street? I ignore them. You learn to do that in a city as large as mine, or else you’d be accosted all day.