Attempted murder is a crime yes. Stalin was fine with the many pogroms immediately after the communists took over. They briefly used the Jews to help them with thier agenda then immediately turned on them. Starting during the war and continuing on.
He was gearing up to put them all in gulags but he died first. You say that’s worth ignoring but let me ask you this: if I built a jail in my house, buy an abduction van and began writing down all your movements, and tell people I’m planning to imprison you for no reason. Is that alarming? Is that showing where my morals lay? Is it a crime? would you want me arrested?