Arkin has worked with NBC and MSNBC over the years and continuously since 2016. But yesterday, he announced that he was leaving the network in a long, emphatic email denouncing the networks for their superficial and reactionary coverage of national security, for becoming fixated on trivial Trump outbursts of the day to chase profit and ratings, and — most incriminating of all — for becoming the central propaganda arm of the CIA, the Pentagon, and the FBI in the name of #Resistance, thus inculcating an entire new generation of liberals, paying attention to politics for the first time in the Trump era, to “lionize” those agencies and their policies of imperialism and militarism.