Facebook founder Mark Zuckerberg should perhaps double or triple his security if he does not want to suffer the same fate as the staff of Parisian satirical website Charlie Hebdo.

While he encountered a Pakistani extremist in 2010 who sought to have the death sentence imposed on Zuckerberg for his rejection of the Pakistani's request to ban content about Prophet Mohammed, the threat could still be carried out as Islamic extremism has been elevated to a higher level the past few months.

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The best proof of that is the Paris Massacre and the beheadings and other atrocities committed by the Islamic State all in the name of Allah, whom they perceived as being insulted by western media as well as social media sites.

In the case of Facebook, the Pakistani didn't like the portal's promotion of Everyday Draw Mohammed Day held on May 20, 2010.

He got the idea to pressure Zuckerberg when Comedy Central censored a portrayal of the prophet on their South Park show in Pakistan since the country, being predominantly Islamic, considers it criminal to defile Mohammed's name, which Muslims consider sacred.

In a post on Friday, Zuckerberg insisted that Facebook is where people from different parts of the world share their ideas and opinions. It follows national laws but won't let a country or a group of people dictate what members could share.

The 30-year-old billionaire, upon reflection on the Paris Massacre and his own encounter with extremists, said he won't be cowered by these people trying to silence the voices and views of others.

"I won't let that happen on Facebook. I'm committed to building a service where you can speak freely without fear of violence," Zuckerberg posted.

He also honored the Charlie Hebdo victims by saying that his thoughts are with them and their families as well as with the people of France and others who share their views, which takes courage.

But an Islamic follower, Aftab Ahmed, questioned Zuckerberg for not condemning the killing of people in Palestine, Iraq, Afghanistan and Syria. Ahmed further criticized Facebook for banning pages that post offensive things, implying Zuckerberg has a double standard when it comes to bans.

In reply, Zuckerberg said, quoted by Daily Mail, "Freedom of speech and hate speech is not the same ... Go educate yourself please."

TagsMark Zuckerberg, Islamic Extremist Groups, Paris massacre, Charlie Hebdo