Perhaps Zuckerburg doesn't believe the government should be sharing information about its users to other governments? Since when has the Israeli government been so trustworthy to its citizens. Anybody remember Chevron? Perhaps, the American government could give information about Kahanists and JDL members who are Israeli citizens to shut down the organizations, which are illegal in Israel and listed as a terror group in the USA. I don't know the full story, but I have heard Mark Zuckerberg has been a supporter of Israel. I know his Jewish family who lives (or lived) in Brooklyn. His family takes visits to Israel on the occasion, including his sister who met with the Israeli president.