Don’t just blame the zealots.
All it takes for a society to become intolerant is for the “moderate” majority to not mind what a tiny intolerant minority demands.
If you have ever felt that
I don’t like it but it doesn’t affect me
or worse
I don’t want to look like the intolerant guy, so I’m secretly happy that the intolerant bunch is doing the dirty work of making the environment more favorable for me
Then you are part of the problem.