Is this supposed to be some kind of "gotcha?" I don't really care about the language being used to describe this law enforcement agency: it isn't going to change my opinion about their mission or somehow change their legal ability to carry it out.
You're right: because I do not want illegal immigrants in my country I haven't "read a single history book."
Nah, it's your support for lawless authoritarianism because you think it will improve your safety- that's the part you missed in history class. That's the con you are falling for. The truth is that once authoritarianism takes hold, nobody is safe. Many Germans who thought the Nazi's would only target "bad people" learned this the hard way.