I wish I understood how people stumble into racism.
To me it's like accidentally stumbling into cheating on your girlfriend/boyfriend.
Like, no you didn't. You did the shit consciously and intentionally. If you have words like these inside you for them to have ever been blurted out in anger or casually, you need to start asking yourself why rather than apologizing and making excuses. People need to try some accountability on for size.
In my defense, I had a hard time as a kid, and when the mexican kid called me a pinche chino, I threw every bad I knew at him. But that's a defense mechanism for a kid who's getting hurt trying to hurt the other person back. But I was a kid. I have a much better vocabulary now.