Jay Leno showed a picture of the Golden Temple, a Sikh holy shrine in Amritsar, India with the tagline "Mitt Romney's summer home". The Sikhs a Warrior Religion
were not amused.
Political speech is protected by the 1st Amendment to the US Constitution so, IMHO, the suit doesn't have a leg to stand on. Lighten up! Clearly no offense to the Sikhs was intended. To the contrary, the splendor of the shrine is what made the joke work.