Just a friendly note:
1. A network of forced labor camps in the former Soviet Union.
2. A forced labor camp or prison, especially for political dissidents.
3. A place or situation of great suffering and hardship, likened to the atmosphere in a prison system or a forced labor camp.
Contrary to some opinions, there is nothing in the definition to suggest that a gulag must contain large numbers of people, involve torture, execute ethnic cleansing, and so on.