There were these attacks perpetrated by what I hear are members of the Libyan branch of Al Qaeda. They said they did this out of anger over the anti-Islam movie that came out recently. They used the protest near the embassy as cover for their attacks. When it was all over, the US ambassador to Libya and 3 others in the building were killed. I hear that in response to this, US Marines are now moving into Libya. Sounds like the war on "war on terrorism" just spread into Libya.
Moral to the story. You attack a US embassy, and ESPECIALLY if you kill a US ambassador, and you are SO SCREWED in a BIG WAY!