@dzwiedziu @catileptic ECM depends a lot. Any radio thing could be jammed, if people are aware in advance that it exists and know what frequency you're transmitting on. Also, ECM in a city could disrupt other things so it may or may not be deployed... after they know what you're doing. The bigger risk would be everyone linked together in a protest could be charged with terrorism as a group or something if someone's face attacks a cop's fist. TAK has programmable plugins, which could allow you to swap out your TX in a lot of ways that could make you more dynamic than your opponent. But, again, this depends on the situation. In a truly adversarial situation, I'd probably prefer to be dark than to paint a big sig-int target on my back but I guess the US Mil doesn't necessarily have the same concerns so... whatever. You would *not* need a smart phone. Telemetry could be via LoRa, so a cheap device like a tt-go could work. Each medic or marshal could have a Baofeng 888s for coms. You would want to have a coordinator who was sitting in front of a laptop or tablet with a radio or two feeding info between people or teams. So, yeah, one person needs a device of some type. Everyone else could be fed info by radio. Video feeds are supported. Washington banned quad copters at protests, IIRC. Whatever your feed is, you could make it work. There's a DIJ plugin for drones. I mean, you could actually probably bodycam a team for sub €20 each, but you'd be introducing risk for anyone the camera is pointing to. Lots of trade offs here. Really interesting, but not without any risk.