RELATED: National Guard members seen sleeping on Capitol floor ahead of inaugurationThe FBI has warned of the potential for armed protests at the nation's Capitol and all 50 state capitol buildings beginning this weekend.
Some social media messages had targeted Sunday for demonstrations, though it remained unclear how many people might show up.Security in Washington, D.C., has intensified ahead of the inauguration.
Tall fencing surrounds the U.S. Capitol, the National Mall is closed to the general public, and the District of Columbia's mayor asked people not to visit.