Are campaigners valuable?
Modern free societies are hugely vibrant, and in part that’s because of some basic freedoms, especially the right to free association and to free speech. People can come together to argue for any case they like, especially cases “the state” may not like. Campaigners, therefore, are an expression of free society, and they contribute to maintaining society’s freedoms. Arguably, however, they are inclined to a “left-leaning” view of what freedoms matter most.