I meant to quote you and reply last night.
I wanted to say I'm really sorry you've been on the receiving end of racism, that's so awful and it just shouldn't happen 
I can understand how you could've found some of the discussion around this upsetting, there's probably nothing I can say to help you feel better because the reality is that there are pockets of the world where using those terms are still common, and there's just no getting away from the fact that that is upsetting and offensive. I find it upsetting and offensive too, there's no minimising of it from me.
I wanted to reassure you, at least a little if possible, that although it can still be common in some areas, it's not ubiquitous. A lot of people (I'd like to think the majority, but I can't back that up with anything other than a fervent wish that it be true) would never dream of using such offensive terms, we know they are racist words which are often used to cause harm.
But if I may plonk my happy thought for the day here, I'm sure a lot of you already know about Ron Stallworth, and probably are more familiar with the story than I am!
Ron Stallworth was a black police officer in America in the 70's. He infiltrated the Klu Klux Klan which is amazing! As I understand it, later, he spent time talking to these extreme racists and actually managed to talk some of them out of being racist!
He has a book, and a there was a film based around the whole infiltration operation, it was directed by Spike Lee, produced by Jordan Peel, and stars John David Washington. It's called "BlacKKKlansman".
Ron Stallworth - Wikipedia
To you and anyone else in these threads who has had racism directed at you, I just want to say most of us aren't racist pricks, and I'm really sorry you've had to deal with racism 