Yes, but now the seductive idea that one can improve the world by getting one's teenage hormonal aggression out on somebody "who deserves it" is beamed into people's living rooms and onto devices in their pocket, complete with calls to action. How many teenagers do you know who realize how morally bankrupt this is, vs the number of teenagers who are actively enthusiastic about some idea like this?

And, how many people do you know who are past their teens who still haven't "gotten it" yet?

Also, it's an unwarranted assumption that teenage aggression is only held onto by teenagers.

You're probably just emotionally invested in memes and feel hurt when I point out they implicitly espouse shallow and prejudicial positions.

Or in other words, there's a world of harm that can be done by putting a huge number of these malcontents in contact with each other in a way that they can all cooperate, with laser focus on a single subject.