The assertion by leftists is that they are on the side of "freedom" and human rights, and that by confronting or separating ourselves from certain behaviors we are revealing out bigotry and discrimination. In other words, leftists assert that all personal beliefs and behaviors must be embraced by the populace in order for society to become pure.

Except, this is not what they really believe. Leftists argue for tolerance of aberrant behaviors while admonishing normal human tribal and biological reactions. They have a vision for the world, and certain beliefs are not accepted within that Utopian fantasy.

The basis of the leftist religion is not a deity, it is self perception. They worship themselves and think the collective is valuable so long as it reaffirms their identity. Anything that might restrict their pursuit of self aggrandizement is considered oppressive. This is why they often argue in favor of moral relativism. They have a delusion in their mind of what they are; they see themselves as a fantastic gift to the world. But, if people are allowed to judge them on their moral failings then they will always be reminded that they are not all that impressive. So, they seek to control the views and speech of others.