I think we all have a tendency to forget that a nontrivial majority of Democrats did actually vote against this war. And a bunch of dirty fucking hippies marched, and a bunch of stupid bloggers tried to yell STOP.
This quote from Rosencrantz and Guildenstern Are Dead is often appropriate:
There must have been a moment, at the beginning, where we could have said -- no. But, somehow we missed it.
