Social media connects the world and it drives people apart. it can make us smarter and much, much dumber. and it often operates without clear common sense regulation. normally a white house summit to bring together digital leaders for a robust conversation on the opportunities and challenges for today's online environment would be something to celebrate. but this is the trump white house. and so thursday's social media summit is instead shaping up to be a "star wars" bar of the outright. a thinly vailed con cav on the design. platforms like facebook and twitter are not invited. instead there's...