People touch my hair all the time, sometimes even after I say no. However, my situation is a bit different from yours. See, I'm mixed Irish, Romani and Caucasian and as a result have been light, soft, crazy curly hair.
I recently moved into a community that's mostly African-American and for some reason, everyone just always wants to touch my hair. Sometimes they don't even ask permission! I'd be at school walking and someone will just touch it, or at Walmart and people will ask me how do I make my hair this way.
It's a bit strange and yes, I DO mind. It's just hair, you have too, touch your own!