Montebello High School, California, Aztlan
On nearby sports fields, many of the students in PE were grumbling about why they were allowed to do such a thing and wanted go beat the SoBs up. The gym teachers kept them check to prevent any violence.
However, at the point they started to haul down the American flag, in order to hoist the NVA flag they'd been carrying, our coach told us: “Go get ‘em, Boys!”
After a brief pounding, they were overwhelmed, the Stars and Stripes back to the top, and many of us got a piece of that accursed rag the hippies had! When the two top ringleaders tried to get away in their VW bug, several members of the football team kept them from getting anywhere by lifting the car's rear end up; preventing the wheels from gaining any traction.
The cops finally showed up and arrested the troublemakers. No citations were issued against students or coaches, who the cops believed were “provoked”.