Any one party political system can either fail or be maintained through violent oppression. People need to have a say in who represents them and what their values are.

A more sustainable solution than soviet style communism is to have proportional representation and work on instilling socialist virtues such as kindness, social responsibility, and fairness in the population. over time, the people in government will start to reflect those values.

[–] Cowbee@lemmy.ml 11 points 4 hours ago

To be clear, the Soviets did that too. Look at the values instilled in Soviet cartoons for children, as an example. The reasons for the collapse of the Soviet Union were far more complicated and nuanced, such as liberalizing the economy, spending a large portion of GDP on millitarization to keep parity with the US, and existing under constant threat from the outside.