As a budding photo hobbyist (Nikon D200 in-hand), like Thomas Hawk I enjoy taking pictures of architecture when I'm out and about on my travels.  What happened to Thomas when he was snapping from a public venue at 45 Fremont Street in San Francisco is unconscionable.  I wish I could say this was the first time this has happened to him.  Thomas is standing up for all of our rights - photographers or otherwise.

Suggestion for Thomas - consider taking a small portable audio recorder in the future and notify the person at the beginning that this conversation will be recorded. ;)