"has almost no correlation to modern day socialist beliefs, and was more closely related to Mussolini's ideology, fascism, also being completely totalitarian."
That's exactly what modern socialists just keep telling themselves, yet you find nothing but correlation between Nazism and, yes, even fascism with modern socialism with fascism, being a variation of socialism (as well as communism).
There is a version of anarchism that exists to tear down an existing government to replace it with with socialism. That anarchy has no relation to those who do not want to live with any government.
Socialism, no matter what you want to call it, all is based on the lost of individual rights and freedoms. If some socialist promised you anything other than that they are lying. Socialism and all of it's variations are a blight. It is directly responsible for the genocide of 100 million people and the misery and suffering of billions more.
You can already see the damage it has caused to inner cities that have been under Democrat control for decades. While not completely socialist, they have more socialist policies in place than the rest of the country.
Socialism predates Marx but it is has been heavily influenced by Marx.
It and all of this variations do not understand or care to understand human nature. It looks at everyone equally and forces them to live as equals. Much like ants. Humans are not ants. We want to live our lives the way we decide without government interference. Socialism is the polar opposite of that.