The other 90,000 are hiding out in the imaginations of the NY Times newsroom.
Did you know ANSWER sent out an email saying they had 300,000 people ..?? ROTFLOL!!
And .. I heard from a FReeper who was there that a lot of those people recycled the parade route and went through the line 3-4 times .. making it appear as though there were a lot more people. I believe it was their best guess that the total anti-everything group was about 15,000 - at best.
These people CHEAT on everything. No wonder they accuse Bush of lying .. they're so good at it themselves, they must just assume everybody does it.