In the spirit of fairness I have to note the untold deaths caused by non-socialist countries in Cambodia, Vietnam, Iraq, Afghanistan, pretty much every country in South America...
Or even Western nations like America and Canada? How many people die every year from preventable causes? To exposure? To suicide?
Last century non-socialist governments caused untold deaths in many Western countries, starting with Germany for a better known example, but the entire list is quite long. So could it be that it wasn't socialism the problem?
Uh, the point was that a single ideology caused deaths due to socialism. Unless you think that there's a single ideology that caused all of the deaths in the countries you mentioned, then this isn't "in the spirit of fairness", it's just misrepresentation.