Lucky you weren't around in the American Revolution, or we'd still be paying tribute to England. Many children took part in the revolution.
did their parents push them up to the front lines?
Okay, then subject your children to the indignities of arrest and booking. Or, maybe you think no child should go through that, so you wouldn't put your children in that position. What these parents did was abominable, and is no different than those school teachers who take their classes to anti-war rallies. It's all for a photo op and publicity.