"I don't think they're chanting "USA"..."
I'll say it again...I saw a news report several days ago on Australian TV that showed the protesters walking calmly along a street, carrying signs that said USA PLEASE HELP US!
The people looked just the same as those in the beginning of the video. Mixed ages, young and old, men, women and children. And not one of them was armed!
You think rebels in Africa are not sophisticated enough to produce propaganda? Please question what you see - Ivory Coast is French Speaking - few can read and write in their native land - and suddenly you have these signs in English - perfect for the cameras?
Be wary and aware.
Look at post 222 - someone posted a picture of possibly what you're referring to.