alt Hacker News$150 will build you a 7" with a reasonably long flying time, a bit more and you can do some pretty impressive things. You still need a controller but those can be had for cheap as well. The main issue would be hiding it for pickup until after the event.
You’re talking about bargain bin analog FPV drones? Most people can’t operate them and even for an experienced operator it’s far from the best tool for the job of filming armed thugs..I mean ICE..
You’d need a digital system with a gimbal, and the DJI O4 Pro alone will run you $200+. For dual lenses with different zoom levels and feed switching it’s getting pretty expensive very fast.