1. Ben Cohen criticizes Magnum for ousting board members and impacting social mission. 2. Unilever spun off its ice cream brands into a new company, Magnum. 3. Cohen sees no value in the Magnum spin-off for Ben & Jerry's. 4. Magnum claims changes enhance brand's social mission, contradicting Cohen's views. 5. Cohen leads a campaign urging a sale of Ben & Jerry's to socially-aligned investors.