Given the significant invasion of privacy occasioned by the use of drones by law enforcement, warrants should be mandatory before using them for surveillance. And weaponized drones of any sort should be outlawed.
Today we have developed automatic and all kinds of crazy guns that our forefathers, if they were still alive, would not be okay with. Personally, I prefer to use non-lethal weapons. A gun is fine, but let's talk about the bullet.