It seems to me above and beyond the call of duty to put up with this kind of stuff. Though the story makes it out like some random person wrote on Kristen Stewart’s car, it was probably one of the photographers, hoping for a reaction. She barely reacts and it turns into a story anyway.
Why do they have to harass Kristen Stewart? They are hoping she’ll yell at them so they can sell the photos for a higher price. Sucks to be famous.