It's in the linked article - third or fourth subheading, headed "Least credible news footage". Text reads:
"CNN's videotape of Palestinians supposedly dancing in the streets of a West Bank town. CounterPuncher Marcio A.V. Carvalho at the state university of Campinas in Brazil tells us that he and his colleagues had compared this tape with one from 1991 showing Palestinian cheering, and found them to be identical"
Re: Cheering Palestinians - filmed in 1991?!
Date: 2001-09-14 12:29 am (UTC)"CNN's videotape of Palestinians supposedly dancing in the streets of a West Bank town. CounterPuncher Marcio A.V. Carvalho at the state university of Campinas in Brazil tells us that he and his colleagues had compared this tape with one from 1991 showing Palestinian cheering, and found them to be identical"