From suffering arises desire to end suffering. The secular humanistic activist sets himself the endless task of satisfying that desire, and perhaps hopes to end social suffering by constructing utopias. The Buddhist, on the other hand, is concerned ultimately with the transformation of desire.
Capitalist industrial society has created conditions of extreme impermanence, and the struggle with a conflict-creating mood of dissatisfaction and frustration. It would be difficult to imagine any social order for which Buddhism is more relevant and needed.