In Texas if you aren't otherwise in the commission of a crime, you may use a weapon to prevent a crime. And yet the news was not filled with concealed carry permit owners drawing on people to do exactly that. I never bothered to get a permit but a friend who did told me the instructor heavily emphasized if you did use your weapon it would be minimum $25k in legal fees even if exonerated.

Now that permitless carry is legal it remains to be seen if there's an uptick in vigilantism, but I have my doubts.