"But they did change the world. The war in Vietnam ended, and the kind of conformity and unquestioning obedience that people had called patriotism went out of style in a big way. Black rights, women's rights and gay rights came a long way. Chicano rights, rights for disabled people, the whole tradition of civil liberties was created or strengthened by these people. Today's protest movement is the direct descendant of those struggles."

"I can't believe you're talking about them like this," Charles said. He was leaning so far in his seat he was half standing, and his sharp, skinny face had gone red. He had wet, large eyes and big lips, and when he got excited he looked a little like a fish.

Ms Galvez stiffened a little, then said, "Go on, Charles."

"You've just described terrorists. Actual terrorists. They blew up buildings, you said. They tried to destroy the stock exchange. They beat up cops, and stopped cops from arresting people who were breaking the law. They attacked us!"

Ms Galvez nodded slowly. I could tell she was trying to figure out how to handle Charles, who really seemed like he was ready to pop. "Charles raises a good point. The Yippies weren't foreign agents, they were American citizens. When you say 'They attacked us,' you need to figure out who 'they' and 'us' are. When it's your fellow countrymen --"

"Crap!" he shouted. He was on his feet now. "We were at war then. These guys were giving aid and comfort to the enemy. It's easy to tell who's us and who's them: if you support America, you're us. If you support the people who are shooting at Americans, you're them."

"Does anyone else want to comment on this?"

Several hands shot up. Ms Galvez called on them. Some people pointed out that the reason that the Vietnamese were shooting at Americans is that the Americans had flown to Vietnam and started running around the jungle with guns. Others thought that Charles had a point, that people shouldn't be allowed to do illegal things.

Everyone had a good debate except Charles, who just shouted at people, interrupting them when they tried to get their points out. Ms Galvez tried to get him to wait for his turn a couple times, but he wasn't having any of it.

I was looking something up on my SchoolBook, something I knew I'd read.