The right have killed significantly more than communists. We just don’t label it as murder when it’s capitalists, because making “lower beings” suffer is the intended effect of capitalism. Why is it not capitalism’s fault when conservative states fail catastrophically and cause the deaths of millions, but when a communist state fails it’s suddenly socialism’s problem?
Conservatives refuse to acknowledge that capitalism is built on mountains of bones, hubdreds of millions of bones at least, and is still completely dysfunctional. Their criticism of better ideologies is just projection of that.