Excellent point. Would love to change public opinion, then the law would follow.
Though I forgot to mention another key ingredient: convince people that if they've done something wrong, the only path to atonement is to recognize their mistake, repent of it, and seek atonement. Pretending that what one did is okay, when one really knows it isn't, may ease guilt temporarily, but not for long. Such efforts quickly become addictive as the guilt quickly returns stronger than before.
Liberals get much of their power through the manipulation of guilt. People think the only way they can feel okay about themselves is if they can convince others that what they did was okay. This never really works, of course, but makes the people more and more dependent upon the liberals for pseudo-atonement. If people could recognize that repentance is the key to atonement, liberals' power would vanish overnight.