What the actual fuck is this guy smoking? I'm going to go ahead and assume that the average conservative does not think this about the left, because I can't imagine that they could all be that ignorant and divorced from reality. Is this guy an actual well read and respected conservative or is he more of a Glenn Beck or Anne Coulter conservative entertainment troll? Really hoping (for conservative's sake) it's the latter...But according to the it's-all-a-matter-of-perceptions view, there is no moral truth, only black perceptions and white perceptions. This all accords with the left's views of truth and morality.
And, of course, for the left there is no moral truth. Morality is entirely subjective. "Good" and "evil" are individual or societal preferences. No more, no less.