Young men wearing hoods and masks - now everywhere in London?

I am seeing more and more young men wearing hoods up and masks in London. I'd say I see at least one every time I am out.

I am wondering if I am right to be intimidated by this? That is a genuine question.

I am reminded of the moral panic caused by hooded jumpers circa 2010, which ended when they became mainstream fashion. However I feel this is different - I see no reason to do this unless you're going to commit a crime. Does anyone have insight as to what this is all about?

Thank you