That could be part of it. If you are convinced by the Picketty idea where the rich have captured a greater part of the economy and rig the game in their favor (I am personally convinced by this) then you can see why things don't seem to be getting better for most Americans. But why do those same American's not focus their rage against the 1%? I think racism plays a role. And certainly, some members of the 1% stoke these flames.