Hard to have one law for law enforcement uav and another for pervs. Too bad for l.e from time to time I think. Crims taking potshots can get swat called. Regular folks flyfishing perv machines get a free pass, everyone is happy?Don't be too quick to jump to conclusions though, a drone of this type flying in your neighborhood may not at all be there to snoop on you. I know some photographers now use drones instead of masts to photograph houses for sale for instance, completely legit.
Police are also looking into using these for surveillance and crowd control, I think they may not take kindly to someone shooting their camera down.
If one is hovering outside your bedroom window all bets are off, of course.