The officers have POLICE on their chest in big letters. People getting arrested have helmets, bats and window breaking tools on. They aren't "protestors". They are preventing peaceful protestors.
Also there's some claims of some of them being undercover agents who have infiltrated Antifa though I am not sure if that can be confirmed.
But two responses later and you’ve still ignored the question: what difference does it make what they’ve done - why defend unmarked police? I’ve taken the time to show evidence that it’s occurred, it’d be nice if you reciprocated some effort.
[0]https://www.google.com/amp/s/www.sandiegouniontribune.com/ne...
https://www.dhs.gov/news/2020/07/16/acting-secretary-wolf-co...
Media's claim that they are "unidentified" is simply false.
Does that make me identifiably a law enforcement officer?
https://www.dhs.gov/news/2020/07/16/acting-secretary-wolf-co...
Media's claim that they are "unidentified" is simply false.