Iconic comedian Jerry Seinfeld went viral on social media amid his reply to a pro-Palestinian activist who repeatedly asked him to say “Free Palestine” outside Madison Square Garden after the New York Knicks game in the NBA finals on Wednesday night.Seinfeld answered, “It doesn’t exist,” and walked away with a chuckle.The online content creator, who goes by the name of FinesseFave, apparently spotted the Jewish comedian after the game and record…