Quote - > Quote - *With or without religion, you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion.

Steven Weinberg - Nobel laureate 1979*

Just like liberalism, which is a religion for many on the left.

Without taking sides on politics here, the distinction you may be missing is that a political ideology is in principle open to debate, while religious dogma is not.