Clearly firearms laws come into play if they are used. There was a recent case where a shooter collected himself a felony charge for discharge of a firearm inside city limits.

Here's the web page.

However, setting that aside, wanton destruction of other people's property is still a crime. Good drones cost as much as $1,000 or more and carry expensive cameras. Don't expect to knock down somebody's expensive drone and not have repercussions.

Sadly, there is not legal protection against this 'snooping'. Air space above your home and back-yard is not protected. Now consider the air-space above a public beach or the ocean? Fugedaboudit.

I don't like it any more than anybody else. Spying on other people in their back yards or on the beach is creepy and repugnant. The law currently does not favor your privacy, however.