It's hard to open a laptop or cellphone these days and not be appalled by the latest awful or just plain factually incorrect thing Republican presidential hopeful Donald Trump has said on the campaign trail. Thankfully, the list of prominent voices speaking out against him (even among his own party) continues to grow. The latest addition? None other than Facebook co-founder Mark Zuckerberg. The Social Network head responded to the priapic real estate mogul's calling for a "total and complete" shutdown of Muslims immigrating to the United States, saying that his Jewish upbringing means he was raised to stand up against attacks on all communities.