The theoretical advantage of single-issue pressure groups is that they can form broad coalitions, gathering people from across the political spectrum who need not agree on anything other than the group's single issue. For example, Women Against State Pension Inequality (WASPI) is a group that...

Mancur Olson explained in The Logic of Collective Action (1965) that the free rider problem and the paradox of participation discourage rational consumers from taking collective action to oppose policies that disadvantage them. The lack of grassroots opposition to 'nanny state' policies from...