I was threatened by Pak extremist: Facebook chief Zuckerberg

Facebook honcho Mark Zuckerberg triggered off an online avalanche of protests and a war of words between Pakistani trolls and Indian baiters after revealing in the midst of the Charlie Hedbo shootout that a Pakistani extremist had sought to have him sentenced to death because Facebook refused to ban content about Mohammed that offended him.

Zuckerberg did not identify the extremist, but the mere mention of Pakistan brought that country's online defenders into the fray. "You can't just blame the whole nation on the basis of one person's act," one Pakistani follower contested on Zuckerberg's Facebook page.

His comments come just before Facebook users in Latin America will have a chance to pepper Zuckerberg with questions next week when he heads to Bogota, Colombia, for Facebook's first international townhall Q&A.

The social network has held two Q&A sessions so far, both in the US, but this third one could see some grittier topics raised, judging from questions submitted so far online.