Currently the leadership of the Proud Boys are on trial for Seditious Conspiracy (treason) for their roles in the January 6th 2021 coup attempt to overthrow the United States of America. The Defense for the Proud Boys called up "Aaron," who acted as an informant for the FBI.
Aaron testified in court that they were never asked by the FBI to inform on Proud Boys or their plans, despite their clear instrumentality to the January 6th insurrection. Instead, the FBI was focused on gathering intelligence on the enemies of the Proud Boys.
That is to say, the FBI wasn't interested in the white supremacist organization preparing to overthrow the United States on January 6th, 2021; instead, the FBI was worried that the enemies of the Proud Boys would do something to interfere with the functions of the Proud Boys.
To that end, the FBI had informants throughout the Proud Boy organization, to gather intelligence on the enemies of the Proud Boys.
It's just one more data point to throw on the heap. Rudy Giuliani had his inside info to the pro-Trump faction inside the FBI when he let everyone know Comey had a surprise.
Also in 2016, we had Charles McGonigal on the take for Russian oligarch Oleg Deripaska to throw the FBI off the Russian trail.
There's some dirty people inside the FBI, and AG GARLAND needs a broom.