Do you think I over-reacted?

Any time there are cameras around, I try to make it very clear that I DO NOT like being photographed. So, I’m sitting at my desk at work and a client comes out of nowhere, yells my name and snaps a pic. At first, I was pissed, but quickly composed myself and calmly asked the guy to delete the pic. His only response was, “too late, I’ve already got it”. I then went into a bit of a rage. Was I wrong? I know that in this day and age there are cameras all around us and we’re being photgraphed in just about every place of business or street corner whether we like it or not, but shouldn’t there still be some shred of consideration from jerks like this that just snap at will, right in your face? please be nice