Two men have been gunned down by police in Texas after opening fire at a "hate group" event celebrating cartoons of the Prophet Muhammad.
The artist intended to challenge political correctness in art, and he was naive to think the effect of depicting the prophet would be limited.
The terrorist organisation says it was responsible for the attack that saw 17 people killed, as the latest edition of the satirical weekly sold out.
South Africa's Muslim Judicial Council said they condemn the attacks carried out in France, but there are limits to freedom of expression.
French security forces are searching for two brothers suspected of killing 12 people at a French magazine, a third suspect is in police custody.
Duelling biopics of Muhammad reflect differing traditions of Sunni and Shia Islam over depiction of the Muslim prophet.
A French satirical magazine has published a comic book biography of Prophet Muhammad.
The Orientalist scholar W Montgomery Watt wrote of Muhammad, the prophet of Islam: "Of all the world's great men, none has been so much maligned."
Spanish political satire magazine El Jueves has published a cartoon of the Prophet Muhammad on its cover, soon after protests rocked the Muslim world.
Protests against insults to Prophet Muhammad turned violent in Pakistan, killing at least 15, but remained mostly peaceful in other Arab countries.
France has stepped up security and appealed for calm after a magazine published naked cartoons of the Prophet Muhammad that risks fanning outrage.
Even in the hardest of cases such as this anti-Islamic film, the old arguments against censorship remain the best.
Anti-Western protests against a film mocking the Prophet Muhammad has abated, but US policy in the Muslim world remains overshadowed by the video.
Protesters have marched on US embassies across the Middle East over a film deemed insulting to the Prophet Muhammad.
The search for those behind the film implicated in violence in Egypt and Libya has led to a California Coptic Christian convicted of financial crimes.
Barack Obama has underscored the bond between the US and Libya, but vowed to hunt down those behind the possibly premeditated killing of the US envoy.
YouTube says it will not remove a film mocking the Prophet Muhammad entirely from the site, but it has blocked access to the clip in Egypt and Libya.