The left is almost entirely built on envy.
Good point.
I have heard it said that the danger of capitalism is greed, and the fuel of socialism is envy. Very profound, as I see it. It is possible to be a capitalist and not succumb to the sin of greed, the need to mow over everyone and anything to achieve your goals, to obtain more material things. It is not possible to be a socialist without being envious. For socialism at its heart looks to redistribute what was earned to those who did not earn it. Socialists are forever looking at what they can loot and redistribute, either to themselves as spoils, or to the mob to keep themselves in power.