Serj Tankian - Empty Walls

"Serj released the video on September 11, 2007, which fits the theme of the video. The music video was uploaded onto YouTube on September 12, 2007. The video was directed by Tony Petrossian[6]. The video shows young children playing in a kindergarten, with their playing imitating the War on Terror in a tongue-in-cheek manner. In the beginning of the video there is a little girl playing with blocks in the shape of the World Trade Center, both of which are knocked over by a toy airplane thrown by a boy, clearly making the girl upset. There are various different images displayed in the coming scenes that are symbolic of the War in Iraq (such as the children preparing for "war", a teddy bear being pulled down like the statue of Saddam Hussein, a presidential figure declaring "Mission Accomplished", imitation of the capture of Saddam Hussein). All the while Serj, dressed in a top hat and suit imitating the notable American army recruitment advertisement, Uncle Sam (with some elements of Willy Wonka), sings as they play. The video concludes as the children all look out the window of the daycare they are in and solemnly watch a Marine Corps detail load a flag draped casket into a hearse."

(http://en.wikipedia.org/wiki/Empty_Walls)