Lawyers for Dharun Ravi, the roommate of the late Rutgers University freshman Tyler Clementi, have asked a New Jersey judge to dismiss charges against their client, who surreptitiously taped Clementi during a romantic encounter. Ravi, now 19 years old, stands charged with intimidation, witness and evidence tampering, and invasion of privacy for allegedly targeting Clementi because of his sexual orientation, and the role his actions played in Clementi's suicide last year at the age of 18.