A great clip from the new movie. The buzz around the internet is that we see some massive deaths in the opening act of this film. Could this be the beginning of that sequence? It would make sense, the traditional X-Men: Days of Future Past story established many of these characters died fighting sentinels.
Captain America: Winter Soldier seems to engage the audience on many levels. Given our current political climate, there is more than enough suspicion of the power that be to go around. The benefit of engaging in these speculation in the Marvel Cinematic Universe is the heroes can find a way to win. The question becomes what the audience can draw from the hero's struggle.