In which states? Under what conditions? What is allowed if a mob threatens or begins to pull you and your family out of your car and beat you to death?
This is a reference to Florida's Combating Public Disorder Act (2021 HB1). Amongst other things it creates a defense to civil damages for personal injury,
wrongful death, or property damage if the injured person was "acting in furtherance of a riot" (a crime created in the same act). This was widely reported at the time as being a response to cases of people driving through or shooting rioters, which was seen by the right wing as justified self defense against criminals.
FWIW it looks like there's a injunction against the law being implemented while courts decide on whether it infringes right to protest [1]. From what I understand though, that means any civil suits trying to use that defense would be on hold.