One reason is they get beat by the dissemblers - look at how the Clinton establishment took over the Dems in the first place. And you support them. At least, when they are named Clinton. Maybe. At least, sometimes. So? It is normalized, already, in the US. It is the norm. It has been the norm for two hundred and fifty years. That's the core of the problem. You can't "make it stop". There is no magic erase button connected to the human brain. My little crowd has been trying to get the Dems - especially the Clinton establishment of the Democratic Party - to call things by their names for some time now. Sanders represents a step of progress in that direction, actually.