Tom Arnold is on a gonzo mission to save the world from Donald Trump. On Sunday night, this two-year odyssey took a violent turn when Arnold got into a scrap with Mark Burnett, the TV mogul and longtime friend of the U.S. president. As Arnold tweeted just after midnight: Mark Burnett just went apes--t & choked me at this huge Emmy party then he ran away with his torn Pink shirt & missing gold chain.