They will likely meet up with trained troublemakers.
There is much training that they put members through over in Oakland, and I’m sure many, many other ‘Sanctuary’ Cities.
Self defense. Bomb or incendiary device construction, plans of attack on a flat street, in a small shop.
Plans of harassment at people’s homes, places of business, or where the ‘enemy’ sends their children to school.
If these people worked as hard at normal jobs, they would be helping the local economy grow much faster.