One of the things I'll never get is why the police even get involved in peaceful protest. Unless it's a protest against police brutality or racial profiling, they have no dog in the fight. Why can't they just stand back and maintain order? In my youth I probably attended a dozen rallies, and the cops just stood around looking bored. Why would they choose to crack down on cameras?
It's like a subset of another puzzle. When Mubarak and Qadaffi were faced with demonstrations, why did they order the army to shoot? Why couldn't they just make a few cosmetic reforms and rely on the media to delegitimize the protesters? Why do the people in power sometimes insist on acting like melodrama villains?