Idolatry is one of the heresies of Liberalism where they depict man as being a "good" person able to save themselves by "good" works, being nice and donating to charity etc etc.
Thus by their own convictions they convince themselves that they are inherently good and sin can be eliminated to make them completely acceptable to saving and heaven.
So who needs a "crucified Christ" under these circumstances. Liberals don't sin!!
The Bible is just a mythological "guide" but modern education has freed man to the position of superior than those folks who wrote the myths.
So Liberals love Obama - a man after their own beliefs and convictions who can emulate and personify their idol human christ. He frees them from the old traditional moral restrictions and values of yesteryear.