I think that type of behavior is not limited to commies, and occurs whenever one group believes it knows what's best for another.
Yes, I'm aware of the irony, however, I don't claim to know what's best but I do claim to know what is obviously not best, namely segregation.
Research has shown that the indiscriminantly anti-religious are the MOST BIGOTTED, MOST VIOLENT, MOST DANGEROUS TO OTHER'S FREEDOMS ETC.
Err, the muslim governments and clerics in Saudi Arabia (and the rest of the middle-east), are not anti-religious.
Godless commies never poured battery acid on women suspected of cheating, so your statement about 'MOST VIOLENT' can be argued with.
The violence in the studies was family type violence. . . battering, various kinds of violent physical abuse of family members.
I would suspect the example you gave would also have been demonstrated by such folk but don't know of specific cases. Certainly horrendous things of such a serious ilk were carried out by such folk much more so than other groups. The indiscrimminantly pro-religious were 2nd in line but a significant distance less in terms of the standard deviation statistics.