Appellate courts in the First, Third, Fifth, Seventh, Ninth, and Eleventh Circuits have all held there's a first amendment right to film police, and that law enforcement officers do not have an expectation of privacy in the performance of their duties.
We're unfortunately waiting for one of those ICE agents, on camera, to pull the trigger and kill or brutally maim someone doing nothing other than filming, or worse an innocent bystander. It doesn't seem like our political system or even high court currently have the coherence to deal with evil in less-stark terms.
(To my knowledge, there isn't a firearms proficiency requirement for ICE agents. And a basic rule of firearm safety is you don't point your gun at anything you don't eventually want to get shot.)
They won't deal with it then, either.
Source ?
(I got thrown off by this memo [2].)
[1] https://imlive.s3.amazonaws.com/Federal%20Government/ID25542...
[2] https://www.ice.gov/doclib/dro/family-residential/pdf/rs_sta...
In several parts of the country, doing that puts your life at immediate and substantial risk.