We now have a political assassin impersonating a police officer on the loose in Minnesota, which, aside from being horrifying in and of itself, underscores the danger of the proliferation of anonymous federal law enforcement deployments from a wide variety of unfamiliar agencies conducting aggressive immigration operations across the country.

Is that uniformed person who's stopping you or demanding entry to your home legit or a psychotic vigilante seeking to harm you? It's impossible to know.