I recall a huge demo in Washington DC with troops ranging from Free Mumia crowd to your next door granny and grand children march against the pending war against Iraq. I remember the crowds from back in '79 in demos against the Shah. This wasn't a million "we certainly did learn our lessons" march, but I would venture to guess ten of thousand (my guess <= 200k) of Americans marched.
The next day the Washington Post and the New York Times reported precisely nothing on their front page. The Post I believe buried it somewhere in "metro" section!
We already knew the lessons. No one seems to listen to "we the people" anymore.
[edit: typos]
Brilliant point.
"No one seems to listen to 'we the people' anymore."
You mention huge demos, which are nice, but the face of the matter is that what we have in the US is occasional huge showings of opinion and a lot of (almost) nothing. That's why no one listens to "we the people" anymore, because "we the people" don't have follow through.
Edit: Small change.