Not sure.
Supposedly they don't do it anymore.. It was far from massive hence the fairly tame headlines.. tho the tens of thousands is way down in the single digits. 50K would be very generous.
1st paragraph says 'tens of thousands". That could mean 20,000.
Photos looked like less than that.
The same day the USS Reagan and its strike group left here in San Diego, The anti war slime had a march and rally here with Daniel Ellsberg and his hate.