This is false. They most certainly were under the "decree of atheism."
e.g. https://en.wikipedia.org/wiki/USSR_anti-religious_campaign_(...
This is false. They most certainly were under the "decree of atheism."
e.g. https://en.wikipedia.org/wiki/USSR_anti-religious_campaign_(...
By this definition, then, you have no beef with most religions
Additionally, it sure looks like atheism as the state religion and exterminating the unbelievers was decreed by the Soviet authorities.
In the case you pointed out, the only thing those atheists had in common with other atheists then and now, in general, is just a name. There is no shared doctrine(s), it is defined by a lack of. I'd argue the converse, that it is much harder to be of toxic nature when your whole belief system, or lack thereof, is defined by a lacking as opposed to the what can be the insistence of the ones who posit beliefs.