Why does someone or group go out of there way....

I am not going to get into too much detail about this, but why does a person or group of people, want to make you look like an outcast or like give you the eye that why the crap are you here, you don't belong here. I really don't get it, I am not not ashamed of me or ashamed of where I go or I really don't care if you don't want me here or not, cause guess what? I AM HERE, SO TUFF BANANAS..... Just want to get your feed back.....