All though NYC drones would not be armed with guns and be quite small here is a theoretical.
Even a small drone could have a compartment with "gas" to knock out protestors. The NYPD could send a gaggle of drones over protestors and drop gas on them to knock them out and than mass arrest them. They would not have any resisting arrests! The potential of drones to "police" or spy on New Yorkers is shocking and scary because the Michael Premo case proved the NYPD will do what ever it takes to not share video that exposes they are lying and framing innocent New Yorkers.
Follow the link to the Manhattan DA's role trying to protect corrupt cops in the Premo case.
Domain would be TARU on steriods and throw in Drones and a new level for NYPD to have destroy evidence that incriminates them.
http://rt.com/usa/nypd-gas-subway-terror-drill-416/ Just an excerpt -- click link to read more....
"The New York City Police Department announced Wednesday that it will deploy, then track, what it calls “harmless” gases into the city’s subway system over three non-consecutive days this summer.
The plan, to be enacted in July, will investigate New York’s readiness to handle a chemical terrorist attack by dispersing the colorless gas and tracing it as it flows through the city, according to Scientific American. The test is expected to cost $3.4 million and is scheduled to be carried out in all five boroughs and dozens of stations on 21 of the city's 34 subway lines.
“The NYPD works for the best but plans for the worst when it comes to potentially catastrophic attacks such as ones employing radiological contaminants or weaponized anthrax,” police commissioner Ray Kelly said in a statement.
The police will use roughly 200 detectors to monitor the gas. Dubbed the Subway-Surface Air Flow Exchange, the test will be the largest of its kind and organized in cooperation with the energy department’s Brookhaven National Laboratory. They’ll use perfluorocarbon tracer gases (PFTs), which are frequently used to measure potential sites for underground construction. "