Original sentence: Stalin's cult of personality, his concentration of power and the means of its use has led to a common characterization of him as a dictator and to an opinion that he was personally responsible, directly or indirectly, via his policies, for millions or tens of millions of deaths and unjust imprisonments in the Soviet Union
Edited sentence: He was directly or indirectly responsible, via his policies, for tens of millions of deaths and unjust deportations to labour camps in the Soviet Union.Stalin's cult of personality, his extreme concentration of power and the means of its execution defines him as a dictator