This is pure misinformation. I have personally never seen such large crows as the anti war demonstrations of 2002-2003. There 100k people marching several times for several weeks in the European capitals I know.

Some estimate that these were even bigger than the demonstrations against the war in Vietnam in the 1960s. These put the total number of people going out in demonstrations world wide at 30M+. This war was massively protested against, any which way you count.