Allow me to rephrase that for you,
"It's a way to shame conservatives when they speak the truth."
This is you projecting. It has been scientifically documented and peer reviewed that conservatives distort and rationalize away thinking that causes them to experience negative emotions like shame more than liberals do. It is also a well known psychological fact that when our own emotional motivations are invisible to us, we project them on to other people and assume it is what is driving them instead of ourselves. This is one reason why knowledge can confer power. In the course of life one can learn by what we project, a lot about who WE are, not how the other is. One can become practiced enough in this kind of introspection, not to fall for ones own bull shit. It takes some humility, of course, because the who idea is to avoid feeling what we are ashamed to feel.
Take for example a simple idea. You love your Mother, right. If you had a typical Dad you may remember what happened when you didn't show her respect. You should, if typical, have had that thoroughly beaten out of you, one way or another such that today you are probably a big supporter of Mother respect and prepared to defend mothers everywhere. So what happened to that original anger toward Mom you might have felt. You would probably be very ashamed of it and very angry at anybody to thought ill of your Mother. You might even resent that I use this as an example.
You may feel also that were you to ever admit any negative memories about your mother as having any real justification would be a sin. And thus you would be prepared to justify what may have actually been a crime against your own human nature, the inculcation of slavish respect that isn't earned.
None of this, of course, means that you should hate your Mother or hold for her only that feeling. We are complicated and can love and hate at the same time. We are also all part deserving of respect and part guilty of doing harm to others. We can do harm in the name of good too.
The point is that one should be free within, to know ones inner feelings. They are our inner truth but they are not objective facts. Nobody is really guilty of anything and there's nothing we have done we could have done differently. We do not know the feelings that motivate us so we are prisoners of unconscious things. There is nothing to do but forgive, yourself and others.