"One percenters" is a wordplay on the idea that most laws and legislation are created to protect 99% of society from the 1% who like to fuck it up. Of course that number fluctuates depending on the crime, but the idea here is that most people are down to earth, good people, but we still have to have an awareness of the others and protect ourselves from them. Remember the joke I made about black people and movie theaters, it was a joke, but the idea is what I was trying to get at. The very low percentage of people who fuck things up (loud and trashy in theaters) are what results in adverse effects for the other larger percentage of us (higher ticket prices).
You either act like everyone is potentially going to murder you for acting out your sexuality, or you act like no one is going to murder you.
You don't have to know who the one percenters are. There is a median here, you just aren't seeing it. I don't know the whole story here, noone does. They say "he innocently asked him to be his valentine" however other accounts state it was retaliatory for making fun of him. I don't know what to think. If he was mature enough to ignore it, or report it to teachers, or the hundreds of other ways to help the issue he may still be alive. He (King) chose to be an enabler to the problem instead of trying to be a solution.