Victimization Politics

Just curious about something: Why is it when something from way back in a conservative candidate's past comes to light, or even something more recent that was taken out of context, or even something he or she has apologized for, the angry left and the mainstream media hound on him or her about it forever, no matter how irrelevant it is to the office the candidate seeks, and portrays the conservative as the most despicable human alive? But when even the slightest embarrassing revelation comes to light about a liberal candidate . . . the conservative opponent still is the meanest, most despicable human alive because, of course, he or she must have had something to do with it. Not to mention the fact that the media and left wing lionize the liberal candiate into an aggrieved, victimized hero.