That is what the FBI does. It amazes me that people can make movies and TV shows with intricate details of official corruption, abuse, murder - and then be in complete meltdown at the suggestion that it is happening in real life. See Judas and the Black Messiah for just one such case.
And here I was led to believe that movie is just a white-wash of the Black Panthers (ruh roh) and a love note to Communism. Hard to get me to watch such. But I wouldn't put it past the Feds to infiltrate any group - especially when J. Edgar ran amok. Those poor Brownie Scouts never suspected the big one who toted maxi-pads.