Hidden amid all the recent Batman Vs. Superman set images coming out of Detroit happened to be vehicles from Washington D.C.
So from that we can obviously gather that some scenes in the movie will be set in D.C. (though no filmed there).
Now Batman-News.com is stating they have some details about the scene.
It's said it is a big action scene involving Superman and the Capitol building.
Apparently, Superman will have to answer to all the destruction seen in Man of Steel (and probably who the heck he is) as half the public are said to be blaming him because if Superman wasn't on Earth, Zod would have never came here.
No further info is given, but as it's described as a big action scene, it's possible something might be going down between Superman and a villain.
Via The Bananadoc:
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter and Tao Okamoto in new character roles for the film. Justice League is to follow directed by Zack Snyder as well.
For more news on the "Man of Steel" and related movies head on over to the Cosmic Book News Superman movie hub.