TexasCHLforum.com

I'll translate:

BIL: Brother-in-law. Probably the brother of a spouse in this instance given contextual clues.
GF: Girlfriend, with whom the brother-in-law shares a house.
Verbal only altercation: screaming in their back yard at each other. No hitting.
Mis resisting and a fel domestic assault: Brother-in-law was charged with misdemeanor resisting arrest and felony domestic assault.

So dude and his wife are screaming at each other in their fenced back yard and somehow attract the attention of the police, most likely through a concerned neighbor's call. The police, according to the brother-in-law's account, rush through the gate in the fenced back yard with flashlights pointing at them, making them unable to see who is behind the flashlights. Because of the dark and the lack of oral or visual identification, they don't know that it is the police so they run inside the house and shut the door. The police break down the door and charge him with misdemeanor resisting arrest and felony domestic assault. He wants to know what you would have done had you been in the brother-in-law's shoes when the police (whom you couldn't identify as police) rushed the backyard.