Ummm...Wow.
It was incredible. Estimates between ¾ million and 2 million people. And the atmosphere was amazing - peaceful, incredibly friendly, calm but determined, really really fabulous.
Chatted to some random strangers en-route, many of whom had never protested before, everyone lovely and just...human...just ordinary people who felt that this war was wrong, and that they had to say so.
Don't know what else to say, really.