I know exactly what you mean about those "liberal bearded white men with glasses in their 50s"... I was confronted (and shouted at) many times by these guys in NYC in 2000 when I was volunteering for the Lazio campaign, or FReeping in Times Square for Dubya. You're right - they all seem to look the same. They apparently can't believe the 60s are over, and that every person in the city (in the country, for that matter) isn't as "progressive" as they like to think they are.
Thanks, although my wife is less than thrilled I did this with my boy with me, I felt empowered by having him with me. If I don't fight for him, what's the point of fighting at all. These leftist dirtbag would prefer to make it easier for Islamists to kill my son. And hell, the Rat brainiacs bring their kids along to the anti-war death marches. Why shouldn't we bring our kids along to our protests.