"Religion" is a code word used by the left to mean "Christianity", this is really nothing new. They want to do away with traditional religion, even though that leads to bizarre societies (communist, Nazi, etc.) that still contain religion, whether it's leader worship, or the left's new religion, social justice.
Anyway, I didn't write the meme (for example I would have used Cuba instead of Russia, and I don't know what the religious situation was during Revolutionary France...maybe they should have said the British Civil War).