Am I a racist or what?For some reason I don't seem to like South Indians?

I don't like them mostly because they are too ethnocentric and violent. I lived in Maharashtra for 2 years when I was a kid and had a very bad experience.Even the teachers were unfair to me, they used to give me less marks and they didn't stop the bullies from bullying me and when I tried to defend myself by fighting with the bullies, I was the one who got scolded. I never had any good experience with South Indians. They always used to charge us double the price because we didn't know their language and always made fun of us for that reason. People were very impolite and rude too. I've got no intention of hating half of my own country, but they so make me hate them. And worse of all is that they don't even consider themselves to be Indians and won't even try to learn hindi, it's a national language, you got to love it as yours.