It's one thing to bring children to a peaceful rally like you might see with the Tea Party. It's another thing altogether to bring them into an environment where you know you're going to force a confrontation with law enforcement. That's child endangerment.
Given the propensity of moonbats to lie, however, I'd still like to see some photographs of these children from an unbiased source. Likely as not they're claiming seventeen- or eighteen-year-olds as "children".