I just try not to judge people for non-logical reasons like tattoos, music tastes, race, etc.
Why are tattoos and music tastes not valid ways to judge people? As for instance if I want to hire intelligent people, wouldn't visible evidence that a candidate was willing to spend quite a bit of money for the privilege of sitting for hours while being stuck with needles (and without anesthetic, too!) tend to indicate that they probably are not all that intelligent?
When I was in high school, I wasn't allowed to get piercings or tattoos by my parents, but I could do anything I wanted with my hair/clothes within reason. For most of highschool, My hair was electric blue, I occasionally wore fangs you could put in with denture creme, Super wide leg pants (32inch to 40 inch openings per leg), trenchcoat with spikes on the shoulders, spiked red leather collar, black fingernail polish (never went as far as makeup though).
All of this while being in the National Honor Society, Singing in our school's elite music group, becoming an Eagle Scout, being in the top 10 of my class, etc...
I did this to combat the exact same type of bigotry that was everywhere in the small town, rural area I was in.
Anyone who didn't want to bother with me due to the way I dressed/looked wasn't someone that I cared to bother with anyways, so it acted as a good personality filter against people who were unable to see past the physical appearances on the outside. Anyone who came up to me and got to know me forgot that I had blue hair in about 5 min of talking with me.
I kept the blue hair up though college until I needed to find a real job, and figured it wasn't worth the cost' associated with the negative impressions in the standard work force. I still feel like going back to my day glow blue hair.