Friday, Twitter agreed to pull racist tweets after a French organization threatened to sue. The company has resisted efforts to police its content. But hate speech is illegal in many European countries, and anti-hate groups there are grappling with how to deal with the challenge of social media.
Tunisia was the birthplace of the Arab Spring last year, and many regard it as the most Western-looking nation in the Arab world. Yet it's also waging a roaring debate over how to define freedom of expression in an evolving society.
Tunisian protesters attacked the U.S. Embassy recently in response to the anti-Muslim video Innocence of Muslims. This was just the latest of several episodes in which hard-line Muslims have acted out publicly to what they see as attacks on their religion.