[cinquemb]

That is a pretty interesting point. Though, this is DC we're talking about, so local PD probably has attachés from all sorts of 3 letter agencies and access to gear for limited times (with oversight, most likely). Protests that are organized, so far, seem to give ample notice (as far as broadcasting to people) as to when they will occur so coordination probably isn't that hard (and because events take place all the time in DC that probably require such efforts that aren't protests).

Though thinking about this makes me wonder: what types of things we'll see evolve to counteract this type of surveillance, and I'll extend, that are available now to some degree? I keep thinking back to ideas of generating noise, and I wonder what that could potentially look like, what the catalyst for demand for that type of hardware/software would be, and the incentives for the makers of it.