whatever
Established
Regardless of what you think about the ACLU, they do fight for your rights as a photographer. There has been a lot of discussions regarding photographers being harassed by cops lately. This link may surprise you as to how broad your real rights to take photos are. I especially like the recommendations as to questions to ask the officer, if you are stopped shooting.
http://www.aclu.org/free-speech/know-your-rights-photographers
http://www.aclu.org/free-speech/know-your-rights-photographers