s, Why so many prejudice againsyt them i need your point of you?

i'm 14 years old and some of my friend are uals but i am straight though other people look at them n judge them but iw ant to know from the point of you of these people why are u doin this they r human just like u leave them alone. some people think because i know some of them dat i am probably one of them to so how do i like stop dat how do i basically stop people from puttin labels onto each others