....are those who are completely cynical, unscrupulous users, yet manage to come across as guileless, wholesome idealists.
It's a scary combination.
It's what the most prolific serial killers have. It's how they put people off their guard before they kill them.
It's what the best politicians have. They come across as earnest and sincere, so people believe that they really have the public's best interests at heart.
Politicians and serial killers are the best salesmen there are.
Those other guys, who peddle stocks and bonds, or fancy cars, or luxury real estate, are just amateurs by comparison.