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Seems like name, badge number, and some basic form of identification would curtail a lot of the excess violence and lawlessness we see from police officers. Those in the business of enforcing Trump's draconian immigration policies see things differently, of course. They're worried about some good old-fashioned vigilante justice being meted out to police officers and ICE agents.
Homeland Security certainly doesn't like it, tweeting: "California State Sen. Scott Wiener’s proposed legislation banning our federal law enforcement from wearing masks and his rhetoric comparing ICE to “secret police” is despicable." I dunno, seems to me to be the textbook definition of a secret police, with covered faces, no identification, no warrants, etc.
Source: KABC
LOS ANGELES (KABC) -- A uniform, name tag, and badge number are typically meant to signal authority and accountability in law enforcement. But recent immigration raids involving agents in plain clothes, face coverings, and no visible identification have sparked concern among immigrant communities and state lawmakers.
"Law enforcement officers are public servants, and people should be able to see their faces, see who they are, know who they are," said state Sen. Scott Wiener, D-San Francisco. "Otherwise, there is no transparency and no accountability."