I'd never heard of 'incel'
incels / angry young men (& women) / conspiracy theorists / alt-right libertarians are out there in their
millions, busily venting their spleens online and form, for example, the core of the support for that weird orange golf cheat we heard so much about last year... in America, they are heavily armed and we should be grateful that the same is not true here in the UK. see too Q-Anon, dark web and so on. One thing that seems to unite these people is that it is always someone else's fault...
(I'm not commenting directly about the awful events that happened in Plymouth, but rather on stuff I found out back between 2018 and last Jan..)