Sorry your Dad is a lib. My 80 year old Dad, WW2/Korea vet, was ready to get his M1 carbine and go after Ted Rall the other day after seeing him on O'Reilley.
He is almost as right-wing as me. Can't imagine if was a lib.
It'd be nice if they weren't libs, but all things considered, I could have MUCH worse problems with my parents. And luckily I married into a family of conservatives, so I get my right-wing fix. Especially since I live with my in-laws right now. :)