You don't have to be brainwashed to do these things, western culture has always seen acts like this, kamikaze pilots, suicide bombers or attacks like Finsbury Park where escape is almost impossible, as the acts of a brainwashed zealot or a mentally deranged individual. We do it to comfort ourselves, nothing more.
This guy was motivated, find out where he got his motivation and address that, we won't because it will take us to uncomfortable places. That's why we reach for the mental illness tag and it is a profound injustice to the victims.
When was the last time the west had kamikaze pilots or suicide bombers at the rate the Islamic world does, in fact has it ever been a serious issue?
Point to me where in western society there are preachings that match the shite Anjem Choudary and his followers comes out with? The far right in this country get nowhere near supporting ISIS and thus the brainwashing to commit acts like today doesn't happen.
Jo Cox's murderer and this guy aren't part of a plotting network like those on the opposite side are; that's my point. They've become obsessed and deluded with their own hatred and are far more insular, whether they're mentally ill or not.
However despite both crimes coming about due to different ways of thinking, I will say it doesn't make their crimes any better or worse, both this **** today and Abedi are utter scumbags and it's a pity I don't believe in hell when it comes to the pair of them.