Is inequality harmful for growth? We suggest that it is. In a society
where distributional conflict is important, political decisions produc
e economic policies that tax investment and growth-promoting activitie
s in order to redistribute income. The paper formulates a theoretical
model that captures this idea. The model's implications are supported
by the evidence. Both historical panel data and postwar cross sections
indicate a significant and large negative relation between inequality
and growth. This relation is only present in democracies.