raqqah, syria, getting a first look at what is left behind. >> u.s. backed forces celebrating a victory on the streets but danger remains. arwa damian inside raqqah for us with the latest. arwa? >> take a look at destruction around us. this is one of the main squares in rack ka and it was here where isis would carry out its public beheadings and executions and put the heads of its victims on these spikes. a gruesome, chilling reminder to anyone who walked by what their fate could be if they even dared to defy isis' rule. a handful of fighters around us. they're actually from the female unit of the syrian democratic forces, backed by the u.s.-led coalition, and they're very proud of their role in this. they say that women had to play and did play a significant role in the liberation of raqqah because isis was so oppressive towards women and, in fact, this very square is where they would