USSR had a lot of issues, but was a lot better (for the working class) than what was before and what came after. The reason for red scare was to prevent the western working class from overthrowing the oligarchy.

Right now, China is surpassing western neoliberal nations by carefully mixing socialist and capitalist modes of production, guided by Marxism-Leninism with further theoretical developments.

You gotta go out and read some books dude.