Why is everything racist nowadays?

I'm not a racist so don't even think about calling me that. My ancestors fought in the civil war to end slavery. Also, I have many black friends and I dislike racism. It's very offensive when someone calls me a racist. They have no right, it's just an excuse. I understand that a lot of black people are not like this but at the same time, a lot are. There has been numerous accounts in which African Americans try to use their history as a crutch. It's not like that individual was a slave. Even if he was, I wouldn't have anything to do with it. Just because I'm white, it didn't mean I'm racist. In fact, most white people are not. The president of this mostly white country is black. And if the N word is so offensive, why do they say it every ten seconds. The Jews have been slaves for as long as anyone can remember and they don't complain. Remember the holocaust?