Any political theory that needs to be implemented completely, can't be judged based on its components. You can construct lots of internally consistent ideologi

Any political theory that needs to be implemented completely, can't be judged based on its components. You can construct lots of internally consistent ideologies that would be perfectly stable in a vacuum. The difficult part is making one that can survive when put into competition with other ideologies and still be benevolent. Any survival of the fittest type selection will tend to favor nasty traits such as xenophobia.