In a way, it is a part of us. ( human race)
It's not just religion, what about that airline pilot that locked out the other pilot from the cockpit and flew the plane deliberately into a mountain killing everyone on board?
Or the man who walks into a school and shoots the children, then shoots himself.
Or that Nazi nutter who shot 77 people in Norway.
Sometimes people find someone else to share their cause with.
This one in Brussels, is a shared one.
They are not doing it because they don't know what they are doing, they know.
It's a cause, no different to the man shooting children in a school.
It's a nasty part of humanity, and it's not confined to religion.
The cause can be anything, including an issue with authority.
It's people with a disrespect for the lives of other people.
They act it out, when it's shared, they look to the approval of their peers, and unfortunately there are always those cheering on from a safe distance.
We have had murderers in the uk on the run from the police, who have shot people, and they to get cheered on in the sense of being seen as a hero by certain elements.
That Moat bloke had his peers, who wanted him to hurt the police and supported a sort of anarchy.