The 100 million civilians murdered by communist/socialist governments is well documented. What are the numbers for capitalist governments murdering their civilians without even the semblance of a fair legal system?
It's a trap. He's gotten you to apportion numbers.
The point is that it is irrelevant in the first place because the people he wants to lump in with mass murderers like Stalin or Mao or Khmer Rouge largely have never supported them or policies anything like theirs.
The discussion of numbers is pointless without first getting him to narrow down exactly what ideologies he is referring to by nature of actual policies implemented rather than by massive overloaded names.
The debating technique is equivalent to trying to argue that democracy is bad because the Democratic Peoples Republic of Korea is oppressive and tricking us into trying to turn it into a comparison of relative authoritarianism based on flawed, self-selected labels.
Instead it is the premise of what is included in the label you must challenge. It unravels quickly.
