At an annual developers conference Facebook founder Mark Zuckerberg references comments by Republican frontrunner Donald Trump, saying he heard ''fearful voices calling for building walls'' and halting immigration. Rough Cut (no reporter narration).
ROUGH CUT (NO REPORTER NARRATION) STORY: An keynote by Facebook CEO Mark Zuckerberg strayed from the normal company news updates to make veiled references to the 2016 U.S. presidential campaign. He referenced comments by Republican frontrunner Donald Trump in particular, saying he heard "fearful voices calling for building walls" and halting immigration. Trump periodically talks about building a wall between the U.S. and Mexico, at the Mexican government's expense. Zuckerberg's 30-minute speech laid out the company's 10-year plan, which included improvements in artificial intelligence, virtual reality and augmented reality and 'chatbots.'