I've been thinking about the politics I've followed, and I started thinking Bernie Sanders turned me into a racist.
That's not too likely. How did Bernie Sanders make you a racist?
He made fun of my skin color, and I hate him.
Being racist is never acceptable since it harms an entire group of people. Blaming your own racism on someone else is also the wrong thing to do since it passes the blame. You need to look inward and find out why you feel this way and learn to change it.
I don't have to learn from you, you're white.
You certainly don't have to, but you should take any opportunity to learn something new. It doesn't matter what race the info comes from.