Thinking as a Texas LEO, from the two videos, would you recommend charges against the diner with the pistol?
On January 5, a man entered the Ranchito Taqueria in southwest Houston pointing a gun at customers and forcing them to hand over money. As our not-so-friendly robber walked out of the restaurant, a customer who was exercising his Second Amendment rights shot and killed the bad guy as other customers in the restaurant ducked for cover.
This video are the interviews with the shooter's defense attorney and a former prosecutor speculating on whether a grand jury will indict.
Some comments are addressing the carry regulations in Texas. Many states do not require a permit, many authorize open carry, meaning wear the firearm on your hip in sight.
I carried a concealed firearm in Washington State for years in connection with training. The state required a permit and it was not open carry. A friend and I were shopping for a BBQ and he wears his off-duty weapon behind his back. He bent over the meat display and several people saw his firearm and were alarmed. They didn't see the badge on his waist. I carried mine in a shoulder holster which was comfortable but inconvenient in hot weather when I had to wear a jacket.
Carrying a firearm 24/7 prepared us to react as this patron did.
Another takeaway from this incident is the comments regarding how the left leaning prosecutor was elected.