Would it be fair to say most people do not identify with the far left or far right, (I did not say ALL of us, we have our own margins in here).

It's particularly easy if an institution like government is constantly making difficult choices,  while at the same time has required transparency that is not demanded in private industry.    I'm sure there are people in both parties who act unethically/ immorally (pick your term).     I'm fine ferreting those people out.  

The government is a human institution and will always have faults.   Money and power create larger temptations than most us ever encounter.

When you read books like the one you referenced, you know from its title, that its  objective is harming Democrats politically.     The Title Alone tells us the purpose. Why read the book unless they want to believe the claim on the cover?   Good way to make sure you market only to 'the choir' who already wants to believe what's inside.