Lefties claim, that mass shootings are a chiefly American phenomena, and people don't kill each other under Communism, because all are equal, brothers and shiet. But in reality, there were countless mass shootings in USSR, mostly in the army (the only place where Russians had access to firearms). School killings happened too. Motives were all the same - bullying. The only difference is that USSR did everything to censor any information on them and to misrepresent itself as an ideal state without bullying. For example,

https://ru.wikipedia.org/wiki/%D0%94%D0%B5%D0%BB%D0%BE_%D0%A1%D0%B0%D0%BA%D0%B0%D0%BB%D0%B0%D1%83%D1%81%D0%BA%D0%B0%D1%81%D0%B0
>Sakalauskas case - the case of the mass shooting in February 1987 of six colleagues, as well as a warrant officer (the acting guard chief) and a civilian conductor, by soldier internal forces Arturas Sakalauskas. The reason was the bullying of Arturas by these colleagues, which ended in his rape and the non-intervention or tacit approval of the nachkar and conductor.