The opening brief in the Business Roudtable and Chamber of Commerce's challenge to the SEC's proxy access rule cites yours truly at page 11:
There is no evidence that union and government pension funds are the most activist shareholders because they are especially conscientious financial custodi- ans. Rather, union members can benefit as employees by forcing companies to take certain actions that deliver no benefits to shareholders. Shareholder activism can be part of a union “corporate campaign,” in which rather than relying on tradi- tional economic weapons such as the strike, the union pressures a corporation through a wide range of public relations, political, and economic maneuvers. See CRI 320 (BRT) at 16 (citing Stephen M. Bainbridge, Director Primacy and Shareholders Disempowerment, 119 Harv. L. Rev. 1735, 1755 (2006)).
