The kicker comes when he sees this group of men, holding an undiplomatically-worded banner directly in front of a line of police officers. Sasha asks one of the officers why they're not doing anything about it. Here's the officer's response:
"We've got freedom of speech here. If he doesn't like the police– he can say so. I don't have the right to arrest him, because he hasn't done anything against the law. Even if I personally don't like it, I won't touch him. But if one of these people throws a bottle or attacks an officer or insults me personally, I've got the full right to put him in handcuffs."
Whether he knew it or not, at that moment, that LAPD officer was pressed into service as a diplomat, and he knocked it out of the park. Though one peaceful rally does not equal change (anywhere in the world), what a great representation of the American political system. It doesn't always work this smoothly, but when it does, it's impressive-- even halfway around the world.