In DC there are a lot of cyclists who blow through red lights. I usually stop at most of them because riding through red lights rarely buys me enough extra time to be worth it. At most of the red lights heading east through National Mall, there's too much car traffic for cyclists to roll through safely - I usually catch up with the same cyclists I saw rolling through red lights earlier.

The only red lights I roll through all the time are on 4th St NW, the last north/south street on the National Mall on the east side - those red lights are there to allow tourists to cross, but in the morning rush hour, there's typically nobody there to cross the street.