They go for the women. I was at the perimeter of one rally during the Florida recounts, and was shoved by a man who objected to my sign. A second one later tried to tear the sign out of my hands (but stopped, naturally, when several big freeper guys saw him and called him on it). I was also spat at by some old coot at one of the first antiwar rallies in NY, which we were there to counter.
But I am three times your age.
Be warned, if you do this again, that many of these enlightened men on the left are not only cowards, but closet mysogynists. So station yourself & your mom near some big guys and you'll be much less of a target.