Mark Zuckerberg subtweets Donald Trump in moving Facebook speech

Facebook CEO Mark Zuckerberg has a message for Donald Trump: Stop dividing people.

Kicking off the company's annual F8 developer conference, Zuckerberg outlined Facebook's mission more articulately than he ever has, saying the social network stands for "connecting every person. Giving every person a voice." He paired the vision with a broader call for inclusion and openness, indirectly subtweeting the likes of Trump for "building walls, distancing people they view as others."

"It takes courage to choose hope over fear," Zuckerberg said. "You have to be optimistic to think that you can change the world." Read more...