There used to be whites-only water fountains
I assume you're assuming I'm american/South African. I'm not.
However, where I'm from & live, homosexuality is still banned so I definitely know about intolerance.
It's just the other way around for us, for you it's progressives shaming conservatives, for us it's conservatives shaming progressives.
Whenever someone holds a slightly controversial view, even if it's based on facts, people don't think twice about shaming them and boycotting them into bankrupcy.
I know a student who mentionned facts about how homosexuality happens in other animals and he was expulsed from university.