Q: seriously? take 3 bottles of Vodka to your first encounter - one for each of her parents and one for you. They'll love your American Tats in no time after that initial and essential Russian cultural ceremony has wrapped up. And your poor GF'll see that youve taken on for the team, cementing a lifetime of positive US/Russian relations.
I'm sure they don't really hate ordinary American People. But if they're the kind of people that really hate a whole nationality, I wouldn't waste my time trying to win them over. Life's too short to deal with assholes.
Brace yourself! I am still easily swayed by my parents' opinions. If you live in America and are going over there for a visit they expect you to bring gifts "gostintsy"