Some facts
1. Confirmed death toll due to Stalin's actions: 8 million in the course of 30 years. Estimated: 10 million (80-90% of these died of famines due 2 over taxation, droughts and incompetence as well as the Kulaks completely smashing Soviet agriculture with their "kill all our livestock and burn our fields" policy).
2. During Stalin's rule Soviet Union's national unity rose due 2 fear. By 1939 no longer was the country divided, it was completely under the thumb of Stalin.
3. Stalin's policy of regarding people as a resource was what transformed USSR from peasant land to a nation which was completely industrialized, able to out-produce Germany, even when Germany controlled the industries of continental Europe.
4. Stalin may have been a dictator, but he was no Hitler. Stalin was the average ruthless dictator, but who happened to rule a big country AND was competent in politics.
To finish the history lesson, remember that in 1956 happened this thing called "de-stalinization". This means practically all political prisoners were released (and it would become much harder to get into prison for political offences), GULAG was abolished and Soviet Union became a decently open country for foreigners (ie most cities were open to tourism). Remember this. Soviet Union lasted till 1991, not till 1953.
Now, to the documentary. Let's be honest guys, it's a joke. The director had an agenda (i.e. his funding came from "Latvian fatherland" political party, the usual xenophobes and nazi worshippers). I admit, this film is very good propaganda, and could easily convince people who are not educated.
Most of the claims are complete rubbish btw. Only SOME of the interviews were interesting and legit, the only good thing about this "documentary".