When one rejects morality, one rejects God, the source of all morality.  When one rejects God, he becomes like Lucifer:  proud, defiant, setting up a parallel empire against God's.

It doesn't necessarily have to start with disbelief in God and follow with the consequences of that.  It can occur the other way around, because really what we're saying when we reject morality in general, or in particular (i.e., when we sin), is that we reject God's sovereignty over our lives and/or other human lives.

Today's liberals are on a continuum from the pan-permissiveness of the late 1960's:  utter indulgence of pleasure, worship of the self, rejection of authority, opposition to all boundaries, and a hatred for tradition and its values.  Along with that comes opposition to any Common Good, because that would interfere with The Self.  Today's liberals are just The Me Generation, all "grown up" (sort of) and busy deconstructing  destroying  whatever is a permanent Good in the world.

And then one is in a position to substitute self as religion, over genuine sanctity, which is always a fruit of humility.  Hence, the self-righteousness and sanctimoniousness.

I read something insightful today about how the Left and leftist-minded folks relish digging through one's past to destroy them:

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There is really nothing uncanny about it. Most people tend to look at others where they were, and judge them by things they have done in the past, even in the distant past. That is why the Left constantly digs through long-forgotten personal histories in seeking to discredit people; to them, you will forever be whatever the worst interpretation of the worst thing you have ever done or said is. That this is patently absurd, of course, is irrelevant to them. They care nothing for the truth, they only seek to destroy. They are little satans, accusers in service to the Great Accuser.

But they are not alone. Petty people always insist on trying to force people into the box of their past. They cannot conceive of change, of personal growth, or personal improvement, and they hate it when others make them feel as if their understanding of the world is incorrect. They will never stop trying to remind even the most successful, most transformed individual of his less impressive past.

Fewer people look at others where they are. And fewer still look at the trend line formed by what a man was to who he is now, thereby providing a glimpse of what he may one day become.

I was just thinking about this too.  But don't be fooled by the "conservatives" because they can be worse.  How can anyone be a sodomist conservative?  There are many conservatives who are pro choice and pro contraceptive.  And how can someone be conservative if they are divorced and remarried?  And many consider themselves Christians while breaking God's first Commandment. How can conservatives support government programs that tax payers are forced to fund.   We aren't conservative or liberal.   We aren't dems or republicans.  We are Catholics under the Social Reign of Jesus Christ , our Lord and Savior.