anyone right worthy complete utter condemnation republican presidential frontrunner donald trump speak tech conference san francisco facebook founder ceo mark zuckerberg lay trump hard.zuckerberg say start see people nations turn inward idea connect world hear fearful voice talk build wall take courage choose hope fear instead build wall help build bridge instead divide people connect people one person time one connection time think work together important ever course direct jab trump ridiculous idea unite state build giant wall span entire length u.s./mexico border zuckerberg right build wall tear build relationships foster future growth development neighbor nations.zuckerberg also say live connect whether welcome refugee flee war immigrant seek new opportunity whether come together fight global diseases like ebola fight climate change courage see path forward bring people together push people apart exactly right need leader nation go build wall keep world essence keep us sort isolationist xenophobic nonsensical fear-baiting serve absolutely one keep us safe certainly foster relationships rest world hopefully nation come together november seek build bridge walls.featured photo adam berry/getty image via flickr mark zuckerberg masterfully take donald trump peg facebook speech