Im sure this footage is probably been shown on the American News Broadcasts so posting a clip on here wont really add to what is out there.
The re-runs of the Boston Marathon bombing was shown again and again as was 911 into the Twin Towers so soon after. Yes its distressing to watch the crash, even to a non-related observer but todays world now expects this sort of thing to be beamed into our TV rooms and computer screens.......sign of the times.