In November, a bench warrant was issued for Dawson after he failed to appear in court.
According to Capitol Police, Dawson drew a weapon in a screening area at the U.S. Capitol Visitor Center Monday afternoon. At least one police officer drew a gun and fired on Dawson. He was taken to a local hospital, where he was in surgery Monday afternoon.
His condition was unknown.
A bystander, identified only as a woman between the ages of 35 and 45, was injured in the shooting. Capitol Police Chief Matthew Verderosa said her injuries appeared to be minor.