"Demonizing" your opponents, whether in politics or in warfare is a common trick.  

If everyone except you and those who believe exactly as you do is a demon, anything you do is righteous and even Godlike.   

That has been a political constant going back centuries.  The opponents change and the Gods change, but the demonization of the opposition in all human societies remains the same.  

"Not 'being as honest as we would like' is fine because she is dealing with demons.  All of the Republican candidates except the 'unwitting tools', are 'monsters'.    

Those who wrote the Constitution are the greedy "economic aristocracy" in one sentence and Founders who "set the path" we must follow in the next sentence.  

Class hatred is being fomented not by those people but by those holding the views in this letter.