One thing i think is important to point out, though personally I am not sure it is justified, but vegan, long hair, and pot smoker and all choices and can easily be altered if you feel doing such would provide a measurable improvement in your life. Being Black, White, Arab, and (according to most) Homosexual are not choices, we are born with no way to change it. I think that's the biggest line we draw in discrimination, however that is all changing in the past few years with things like cracking down on bullying and other similar offences. Thing we once saw as a a normal part of life are now becoming illegal so in time you may get your wish for better or for worse. Soon things like calling someone an asshole with result in arrests, we are giving up all our freedoms to rules and regulations just like the one you are requesting. I understand why, and see good merit in your suggestion but feel to try and offer legal protection from social response for every single individuality may not be the right option.