Sorry, I'm not sure, but in my opinion, capitalism is not idealistic system to. Because it concentrate biggest part of capital in hands of a few people, multibillionaires. It give them unlimited power from rest people and create a different possibility between poor and rich.
Communism proposed same possibility for everyone. Proposal to transfer private property the country. It means to share with every inhabitant. It humanistic, but not realistic. Because few rich people in the world understand how its important: freedom. equality. brotherhood.
I'm sorry for gramma mistakes.