Nakoula Basseley Nakoula, a Coptic Christian, says that he helped with logistics for the film "Innocence of Muslims," which mocked Muslims. He denied directing the film. But there's evidence to suggest the filmmaker, Sam Bacile is an alias, which is strikingly similar to Nakoula's middle name.
All the evidence is pointing to Nakoula. Apparently, the guy claimed to be Israeli. But now that he appears to be a Coptic Christian, we can expect this sort of thing erupt again:
At least 16 people have been wounded after Muslims attacked a church and Christian homes in a village near the Egyptian capital, Cairo, officials say.

The unrest in Dahshur, about 40km (25 miles) south of Cairo, started after a Muslim man died of wounds sustained in an earlier clash on Friday.

Violence frequently flares between Egypt's Muslim majority and its Coptic Christian minority.

As a Marxist, I do not blame religions for this mess (religions don't know anything), I blame capitalism (this is where I part with Dawkins). If wealth was more evenly spread, and people felt more socially secure, then the power of religions would weaken.