About halfway down a Facebook page devoted to organizing boycotts of companies associated with deep-pocket political contributors to Gov. Scott Walker, there was this sobering comment: "I don't think I can be part of this anymore," wrote Mary Possin, a small-business owner in Monona. Possin said she couldn't support the page's directions that consumers not buy products from businesses including Johnsonville Sausage, Sargento, Menards and M&I Bank. "Has anyone considered the impact on the workers of these businesses? They will be the ones who are hurt," Possin added, noting small businesses that carry boycotted products would be most vulnerable. "The...