Originally Posted by
chtiet
Yeah, the Pentagon is in Arlington, VA (coincidence?

), and away from any other of the classic DC sights. Maybe only if you want to see the new Air Force Memorial would you run into the crowds.
Incidentally, the Pentagon is not accessible all that well on foot, so I wonder where they're planning to protest...
In a giant parking lot probably? The Pentagon City Mall food court? Anywhere on Pentagon grounds (including parking lots), you're subjecting yourself to searches at police discretion, so that ought to be interesting.
For the OP, I agree with all the other posts--nothing to worry about. Even Arlington Cemetery, the closest tourist site to the Pentagon, shouldn't have a problem.