"Explain what religion was practiced, and I mean actively promoted, by Pol Pot, Mao, Marx, Lenin, Stalin and Hitler"
In some the state as religion, as you said, or the elimination of religion to "better the masses," although in Hitler's Germany the vast majority of the population remained in some form of Christianity.
"Christian/Jew is a moral order based on rules and basic rights directly from the Creator to man."
I'm an atheist. You might as well be telling me it was handed down from L. Ron Hubbard. I honestly don't care where it came from, I care about whether or not it makes rational sense and works.
"It's only when humans believe "rights" are assigned" by the government that inhumanity arises."
Human rights ARE assigned by the government (or the society as a whole), even if you dress them up in fancy language and cultural assumptions about dieties. I'm lucky enough to live in a society where the religion of the culture at large assumes many of the same rights I would find to be logically consistant with a healthy society.
Unfortunately this always makes me a little nervous, since people tend to fail to examine why certian rights are important, resting on the assumption of divine intervention to do the mental legwork for them.
Wrong. We are born with these rights. Read any American history?