It’s quite common for migrant families to takes a few years off their kids age when they arrive, so they’ll adapt more easily, learnt the language and whatnot.

This makes sense to me, to change the birthdate, to get additional support. A lot of young people looking a tad older. But when crimes are reported, where do officials get the birthdates from? Or do they reporting most likelies?

I've lived in Sweden all my life. This is 100% real. These gangs have guns, knives, sometimes even hand grenades.