My school work :)

1. The canted camera angle shows the United States flag waving around in the
wind. As the camera begins to cant in the opposite direction, and
simultaneously, the field of focus opens to allow the viewer to see the
location a little, which is Washington DC. The use of cinematography in this
scene is key to show the viewer that America is literally ‘turned upside
down’.
The fact that the US Capitol building is destroyed and is smoking like a
chimney, shows that all the authority is gone. The western civilization in
America is no more and it has become a Zombieland.