I really dislike this argument. Domestic violence rates rise when it is hot, during holidays, and per the same study that supposedly found a link between football and dv-especially Thanksgiving (by 22%!!). What these events have in common is alcohol and proximity. It has nothing to do with the sport itself.
You can't make rules for DH about watching TV. He's a grown adult. I hate sports, football included. I don't watch or go to parties. If you don't want to then find something else to do. Take your son out with but it's likely as he get's older he may want to participate in these parties.
I was so greatful that my XH was not into sports, but both our brothers & Dad's are to a certain degree.