The "occupation" of Latvia and it's surrounding countries Estonia and Lithuania lasted for 51 years. It was an unprovoked occupation by a major super-power (Russia). The Latvian government had to chose between a hopeless bloody resistence or the reluctant acceptance to an ultimatum of the threat of overwhelming military force. They chose the latter. The regime change was then directed from Moscow under the pretention of legality.
The psychological and actual terror of this regime exacted a heavy human toll-destroyed relationships, destroyed lives, and destroyed trust. At the end of WWII about 1/3 of Latvia's population was destroyed.
I will not write more on what I experienced there. I cried. Wordless pictures tell it all.