"Matt Bruenig is researcher of poverty and welfare systems at the think tank Demos." By now, it is well established that capitalism is fundamentally built upon threats of force. As libertarian philosophers Robert Nozick and Matt Zwolinski have explained, the only way to turn unowned natural resources (such as land, minerals and other goods) into privately owned property is by violently preventing all others from using them. This one-sided exclusion destroys freedom of movement and cuts many people off from the things that they need to survive.