@Mockney
Worse then youtube comments mentioned in the article are those on random sites - non-political ones. I found a nice reliable football stream on reddit, and the users on that stream are from either reddit or 4chan or maybe voat. Given the level of the "debate" (football or otherwise) in the comments, those guys must be under-18, maybe even 13ish.
Their politics are easily to the right of Le Pen, probably Hitler. It's hard to tell what is irony and what isn't, but obfuscating by using irony is in fact an alt-right tactic. They revel in nastiness and nihlism, towards any groups sometimes including themselves. I think some of those comments originally started from a desire to shock, but it's now the "mainstream" line in those chats. Samples from today: men are better off by being far away from women. Hitler was right. All Africans have AIDS. Sweden is the rape capital of the world. No, it's Nigeria. This is because Africa has no electricity and so can't watch porn. Islam is a religion of peace is a meme they use often. Kebab removal is their favourite policy. They also make a lot of fun of Americans for saying soccer and being fat, so I'm assuming they're mostly British. For some reason the last few days I've also been seeing a lot of bald-hate. Either it's just a new object to hate or it's a code. The commonest insult in any comment is fag, or gayyy, and then everyone ironically claims to be gay (I don't pretend to understand them).
If they are in any way representative of the next generation that follows the (politically awesome) millennials, the liberal order of the west is over (it's already happened in other countries).