I wouldn't be surprised. People are crazy and many don't understand drone laws.
Discharge of a firearm in city limits is illegal. Did you hear gun shot? You definitely would have been close enough to hear a shot gun if it went off, even if it was just filled with bird shot.
The camera appears to start shaking before you see the object fly past the screen. I'm going to guess you lost a prop, and that is what caused the failure. Could definitely be something else though...