Unions and Corporations

"Both unions and corporations are rooted in freedom of association, but it seemed to me that corporations limit legitimate liability, and unions violate freedom of disassociation. They seem fundamentally similar because they both mitigate economic liability with state force. But I wanted to check my own ex-liberal bias. So, I interviewed one person from each side, a radical unionist and a tea-party patriot, to talk me through the gaps in my understanding."