What is that based on? The only people I hear even talk much about 'gangs' is conservative propgandists trying to demonize black and brown people and cities. I'm not saying no gangs exist, but they aren't really an issue (unless you define 'gang' as any association of >1 person

> the most sensible solution is repeal of the Second Amendment and implementation of a nationwide, federal license requirement to purchase or own a firearm. 120-day grace period. License each gun, turn them in, or go to jail.

It's a politicized judiciary. For centuries, nobody interpreted the 2nd Amendment the way the conservative judges do now, but when the Federalist Society intentionally politicized the judiciary, this is what happened.