I think the greatest crime against humanity that has resulted from liberalism's removal of God from the public square is that they also remove any discussion of evil. Without hell, there is no need for heaven. Without pain, we don't have a frame of reference to enjoy pleasure. With no God, there is no recognition of evil. The State then becomes God. Liberals believe themselves to be the religion and all that is good, anything conservative or Republican is evil.
Our rights are always accompanied by responsibilities. By getting as many people as possible to eschew responsibility in favor of the state assuming responsibility, the state has been able to arrogate to itself the concomitant rights.