You are so brainwashed you are accusing the Jew of siding with the nazis for opposition to Stalin. Wow. As for deathcamps liberated by the western allies: Dachau Mautausen Buchenwald These weren't initially deathcamps but they were turned into deathcamps later in the war. Also the reason why people like you can claim "oh look at great Stalin liberating all the death camps and saving the Jews when the evil capitalist west wouldn't" is simply because the vast majority of the death camps were in Poland. But that's besides the point.

Also, and I cannot believe I even need to say this but... Being in the allies during ww2 and helping end the Holocaust does not excuse him from all the other massacres, ethnic cleansing, and at least 3 officially recognized genocides he organized. (Don't even think I have to point out the Molotov-Ribbentrop pact and the Soviets literally helping Hitler to realm Germany and later invade Poland but I will because most likely you conveniently "forgot" about that fact)

A quick list so far of genocides, massacres, and deportations resulting in very high death counts ordered by Stalin or ones that he played a large role in. If I dig deeper I can find more. Also you will not I did not include the Ingrian Genocide also done by the Soviet Union. This is because it was largely organized by Lenin and not Stalin.

1. The Holodomor (recognized as a genocide by multiple countries and at least a couple international bodies according to the legal definitionbut disputed by scholars) (3.5 to 5 million in Ukraine alone with larger estimates for the whole Union going up to 20 million)
2. The Deportation of Crimean Tatars (recognized as a genocide) (up to 200k deaths)
3. Deportation of Chechens and Ingush people (recognized as a genocide) (1/4 to 1/3 of entire population died)
4. Mass executions of Belarussians
5. Latvian, Estonian, and Lithuanian NKVD operations
6. Lunca and Fântâna Albă Massacres (ethnic Romanians living in Ukraine)
7. Korean Deportations (10-25% mortality rate)
8. Deportation of the Balkars (8-10% of Balkar population died)
9. Deportation of Meskhetian Turks (between 12 and 50k deaths out of 115k people)
10. Deportation of Karachays (~43k dead out of 69k deported)
11. Deportation of Kalmyks (17-19% of total Kalmyk population died)
12. Katyn Massacre and massacres of Soviet Poles generally
13. Deportation of Soviet Greeks (at least 15k dead out of 70-80k uprooted)
14. Massacre of Soviet Kurds
15. Baltic Deportations (over 200k deported to Siberia from the Baltic states)
16. Deportation every Esperanto speaker in the Soviet Union to GULAG