I do a lot of photography and often have run-ins with law-enforcement; not that I am doing anything illegal, but the police will often (erroneously) claim that I can't photograph something and I'll have to assert my rights. It's bad enough to have to deal with some misinformed cop w. roid rage, but this law just added another tool to the arsenal of stuff they can use to harass people with. "So, you don't want to stop photographing that building, hu? I hear you're speaking with an accent.. Show me your papers." and suddenly I have to spend hours either under arrest or being detained trying to prove that I'm a citizen.