Although I never attended any protests, I did have long hair, at the time. And I was:
- spat on, at a sporting event (by rotary-club-looking guys),
- in a torrential rain (for SoCal) a group of (short haired) kids swerved their car towards me (a pedestrian) to cause my life to flash, and then swerved away, narrowly missing me, drove away screaming with laughter,
- shoved forcefully into a barbed wire fence by a policeman (for no good reason),
- etc.

I've got a lot of wierd stories from those days. But I can tell you for sure: the protesters were not so popular as you make out. Nor were the pro-war folks so pure.