A person or a party that spends an inordinate amount of time worrying about what color another's skin is is truly a racist entity. Couple that with their spending time being offended on behalf of someone else and you border on institutional insanity. Finally, add to that the results of this study, which coincidentally points out something most of us have known for years, and you how foreign their thought process is.
Notice that when a liberal begins to speak about conservatives, they launch almost immediately into personal attacks, rather that continuing the conversation. Right away, conservative viewpoints are 'radical', 'risky', and 'fringe' while the speaker himself is a 'wing-nut', a 'far right' something, or simply 'racist'