Tocqueville effect
The Tocqueville effect refers to the phenomenon that as social conditions and opportunities improve, social frustration grows faster. The effect is based on Alexis de Tocqueville's observations on the French Revolution and later reforms in Europe and the United States. Another way to describe the effect is the aphorism "the appetite grows by what it feeds on". For instance, after greater social justice is achieved, there may be more fervent opposition to even smaller social injustices than before.