Is it really 1st amendment?

or just lunacy and indecency? These nudists are just immoral and indecent people. You cannot just go in the middle of the shopping mall then get naked!

http://www.cnn.com/video/?hpt=hp_c3#/video/us/2012/11/21/sf-public-nudity-ban.kgo

I thought San Francisco is hopeless when it comes to common sense so I am glad they voted to ban nudity in public!