Sadly, most (if not all) of us judge others initially on appearance.  In both good and bad ways.  We project positive qualities on those who we are attracted to, even if they are not deserved, and project negative ones on those who do not meet our preconceived notions of beauty or conformity.  I think this is just human nature.  What you are describing happened to me often in my twenties, and there were times when I even actively encouraged it just so that others wouldn't mess with me.  I have found that the quickest way to dispel these attitudes is whenever I sensed it occurring I would simply make eye contact, nod, and smile.  That small act of engagement is usually enough to lessen any possible fear they may have and at the same time cause them to begin to reevaluate their own prejudices.  I'm not suggesting that they will suddenly see you as jovial, but it does allow you to start controlling the situation.  Just a thought.  (smile)  BTW, the only impression I personally get from viewing your photos is that I believe I would much rather have you on my side during an altercation than on my opponents.  -Kurt

Brilliantly put good sir @BLOODYMONGOOSE