I've often expressed similar thoughts to these in trying to define the signal delusion or corruption of common sense motivating left wing idealism, but don't think I ever attained the simple clarity of this paragraph from Thomas Sowell:
The fundamental problem of the political Left seems to be that the real world does not fit their preconceptions. Therefore they see the real world as what is wrong, and what needs to be changed, since apparently their preconceptions cannot be wrong.