As an aside... here in the U.S. motorcyclists (Bikers for short) belong to one or more groups and one of those travel to every service man or womans funeral. Named "Rolling Thunder" they line the route for a couple of miles or more and carry American flags, which they silently dispaly. They're greatly apprecaited and very well behaved.
This morning (9/11) they had intended to have moderate sized gathering in Washington D.C to commemorate 9/11 but some ill advised fool in the National Government office declined to give them the prerequisite permit for a 'display', saying since it was a weekday it would tie up traffic to severely.
Well, the outcome certainly tied up traffic! They had originally expected less than 100,000 thousand and the entire thing would have taken about 3 hours.
As it was, the phone lines must have been burning up because an estiated 1.2 million bikers rode into town. No permit required for simply riding on the streets so no laws were broken... but it's going to take all day and much of tonight...