In Texas, the law specifically states that you can use force to protect yourself if a peace officer uses unlawful force. https://statutes.capitol.texas.gov/Doc

In Texas, the law specifically states that you can use force to protect yourself if a peace officer uses unlawful force. https://statutes.capitol.texas.gov/Docs/PE/htm/PE.9.htm https://statutes.capitol.texas.gov/Docs/PE/htm/PE.9.htm. Sec. 9.31.c Sec. 9.32 and 9.33 goes on to say, that you can use lethal force against a peace officer in protection of yourself or of a third person whom the peace officer is using unlawful force against. I wonder how many peace officers actually know about that law though. And regardless if it was legal to use force against the peace officer, there's a saying: "you may beat the rap, but you won't beat the ride" (in the back of a police car, or if it was against a police officer, probably in the back of a coroner's vehicle).