Two easy points.
The officer didn't point the gun.
There's a logical difference between offensively pulling a gun and defensively pulling a gun.
A firearm is all offense.
I believe Texas has Castle Doctrine as well as domicile defense.
The trespassers are lucky the residents didn’t shoot them.
Lesson here is don’t trespass and mouth off about it and expect to go home unmolested.
The youths got off easy. Ergo, it will happen again.