>>23436896
They're social rejects that most likely get bullied in school. Their post post modern humor where everything is subject to ridicule is very indicative of teenagers. If you remember the niggercel shooter you have a pretty good idea of their demographic. These children don't receive enough attention or don't socialize much so they act out for attention and fall in with fringe groups so they feel like they're part of something.
The why is a good question that we can't get an answer to because they'll either be disingenuous, dismissive or outright lie when questioned.