> If you don't already know that keeping the name & badge number visible is the most important part of proper policing

But clearly there are exceptions. You can even read about them on European police websites.

https://handbookgermany.de/en/police

"In particular, criminal police officers also work in "civilian" clothing and therefore are visually unrecognisable as the police force. They often have to hide their identity, for example, to observe people or to enforce arrest warrants."

RIght, because a detective going undercover to gather evidence means it's perfectly okay for masked thugs to pop out of unmarked vehicles and grab people off the streets.

Dude, WTF

Detectives are "masked thugs to pop out of unmarked vehicles and grab people off the streets".

You've never seen a takedown of street level drug dealers? Unmarked cars, plainclothes police, grab everyone off the street?

I'm really trying to understand what specifically you find objectionable. Is it the fact that ICE isn't in uniform? Or that they wear masks? Or that they arrest people?

> Detectives are "masked thugs to pop out of unmarked vehicles and grab people off the streets".

The moment they make an actual arrest (which is rare, since they prefer to maintain their cover), they identify and are held accountable for how they do it.

Something ICE is not doing.