In many countries most normal people will harass, imprison or kill people based on sexual preference or gender identity.
Just normal people. Not members of any extremist group. Just the guy who is selling groceries or the gal buying them. Most people on this world hate anyone who is different to them.
A life of experience being different to people surrounding is my source.
I suppose you can check mental health statistics on people who is different to the group they are living with and see how they are doing.
Also literally most countries legislation legislates against different people with plenty population support.
People is awful.