"By introducing or encouraging the presence of disparate groups, the tyrant can weaken the bonds of philia among the native population, sow distrust, and thereby make the populace easier to control by preventing the formation of a united opposition. As Aristotle himself noted, “a tyranny is not destroyed until some men come to trust each other”. If, as contemporary research suggests, increased ethnic diversity leads to a decline in social trust and civic engagement, it directly undermines the conditions Aristotle identified as necessary for resisting tyranny."