Elizabeth asks Erwin Paladino for name and badge number. She does not get it. Notice the pad in her left hand which she got out of the van to write down his name and badge number. Asking for it is what pissed him off to the point of dragging her across Tejon.
To the left, in back, hiding behind armed men with Glocks, chemical weapons, and Tasers, is Mr. Green Jeans, our fearless provocateur; a satisfied look on his otherwise rather stupid expression, for a job well done. He's helped turn peace into violence. A nice afternoon into a "massacre". The "threat" peaceful people represent into a mockery of justice, a domination of violence over passivity, and a re-establishment of the law of the jungle: Those with the most weapons rule. The fastest draw controls the world. Might makes right.