Harassed by a tree hugger

[nikramos]

I stopped by at Walgreens in San Francisco last Wednesday.While I was waiting for a parking spot, this woman knocked on my window. I politely rolled it down and immediately she said that I am a reason that US troops are getting killed in Iraq and the destruction of the environment for driving the H2. I just rolled the window back, ignored her and proceed to park. She then waited for me to get down and she continued to rant and rave. I still ignored her since I was with a female office associate. The moment my officemate went inside the store, I responded to the tree hugger's yelling and screaming. It became a shouting match-I was telling her that she was just jealous that I also support the environment but just fell in love with the looks of the H2. She wont back off. I did not bother going inside the store too since she might vandalized the H2.I finally told her to go back to her girlfriend and lick her p---y. She was shocked turned around and left. My officemate heard it too. I should not have lost my temper but the more I ignored her the more she harassed me. How would you have handled the situation?