[gleeaikin]

There is a big difference between the Marxist/Leninist Socialism of Russia, and the Democratic Socialism of Denmark, Norway and Sweden. So far as I know the three Scandinavian countries are not known for having concentration camps. Below is a lot of information.

https://en.wikipedia.org/wiki/Socialism This is a detailed description of the history of Socialist related movements.

https://en.wikipedia.org/wiki/Types_of_socialism This is a more defined listing of the many types of Socialist named (at least 10) or socialist related kinds of social/economic organization.

[Tzimisce]

There is a big difference between the Marxist/Leninist Socialism of Russia, and the Democratic Socialism of Denmark, Norway and Sweden.

There is NO difference between the any of the above.

They all target the middle class.

Wikipedia is not a good source. I'd never use it.

Instead, I would direct you to The Communist Manifesto and you can take it right from horse's mouth.