Ideas have consequences. Darwin had a big impact on Karl Marx's philosophy. Evolution leads to depression. Is Das Kapital good for humanity? We think not.
On a recent trip to Argentina, President Obama said this,
... there's been a sharp division between left and right, between capitalist and communist or socialist. ... you're some crazy communist that's going to take away everybody's property. ... you should be practical and just choose from what works.
In communism, private property is gone, but what does God say?
"You shall not steal." (Ex. 20:15)
"... Anyone who steals must certainly make restitution, but if they have nothing, they must be sold to pay for their theft. If the stolen animal is found alive in their possession - whether ox or donkey or sheep - they must pay back double." (Ex. 22:3,4)
If we have no private property, how can anyone steal?
Let us consider these wise words from Edith Schaeffer:
Where did Hitler come from? Or Lenin? Or Mao? Or Stalin? Or Amin? What about the Berlin Wall? What about Afghanistan?
What is the cause that brings an effect into the place where it is seen, smelled, touched, heard, felt? How do actions come?
In the mind. Just as creativity is in the mind first, so devastating destruction is in the mind first. Violence is in the mind first - from ideas.
Ideas come first.
Ideas give birth to action - good or bad.
Ideas give people their world view. 
Edith Schaeffer (d. 2013) was the wife of Francis Schaeffer (d. 1984).
1) The Art of Life by Edith Schaeffer (Crossway Books, Westchester, IL, 1987), p. 117.