Everywhere. Even if they have warrants. Seriously. These are Nazis and should be treated as such. Do not let them kidnap people. Shame them until there are enough numbers on your side to fight back.
If you don't know the victims name. Learn it and keep repeating it. Yell "they are trying to kidnap !". It humanizes them further against a masked person that won't identify themselves. It can help attract people around to help.
And it has to be you. Everyone else is in "freeze" mode as they don't know what's going on. You do. You know. You gotta be the one to start resistance. But you won't be alone long.
Fuck these Nazis.
Sometimes breaking traffic laws is literally the safer option. The laws are written for cars not people on bikes. Me sitting in the turning lane between a bunch of massive trucks hoping people notice my bike with a flag on the back and remember I'm there when the light changes. Or I ride on the sidewalk and use the crosswalk. Technically one is legal and the other is not (depending on the local laws obviously).
Seriously though. I got the flag after the first time a massive truck pulled up behind me. Realized they literally could forget I'm there their Field of view is so bad.
I really don't know how they are legal. I mean I do. But they shouldn't be. Only thing that big should literally require a commercial license and a valid reason for use.