Uh... I'm convinced that you both are very wrong (both you and the comment you're replying to). We approach to this problem entirely wrong. Nobody needs to be convinced that capitalism is bad or socialism is good, or that socialism kills people or whatever. This sort of ideological/political discourses that usually emphasize Great Men (like politicians who convince people best about why capitalism is good/bad) are the very center of the problem of both (1) authoritarian governments like USSR killing people (2) social injustice killing people. The real real problem is always the actual materialistic forces that drive people. I'm a software engineer because I like the job, it pays very well and lets me live comfortably. I got this job because my family was rich enough to send me to university where I studied CS. When you're talking about the inequality between me and a poor person, this is the real difference, not my ideology or a poor person's ideology. This fundamentally means that ideologies -- authoritarian or not -- like Marxism-Leninism are not an answer to the real problem, nor is talking to people about your religion, Jesus Christ or evil capitalism. The heart of the problem, as always if the material conditions in which people live, the condition of the workers.