How can rhetoric be used in manipulation?

Rhetoric can be used in manipulation by using extremist ideals in a debate or in a worldly situation. When disagreements are so driven and distorted by extremist rhetoric that citizens and public officials fail to engage with one another reasonably or respectfully on substantive issues of public importance, the debate degenerates, blocking constructive compromises that would benefit all sides more than the status quo would. Rhetoric is often mislabeled as manipulation, but rhetoric is actually concerned with persuasion.  "Psychological manipulation is a type of social influence that aims to change the perception or behavior of others through underhanded, deceptive, or even abusive tactics. By advancing the interests of the manipulator, often at another's expense, such methods could be considered exploitative, abusive, devious and deceptive." Though a person who persuades and one who manipulates may have the same end in mind, the process is different. The end does not justify any means in rhetoric, because the means of influence can have implications which are more severe than the influencer ever dreamed of. Political leaders use propaganda in times of war to persuade citizens to believe a certain ideal. Such as Hitler persuading his people that the Jews were inhuman or America and trying to get the american people to join the war. This is two different examples of rhetoric being used. America is using rhetoric as a tool of persuasion while Germany was manipulating the German people into believing an ideology that was simply an opinion. In Germany's case they used rhetoric to manipulate and their situation became severe, which would soon lead to the holocaust. On the other hand America used it to try and recruit, not give them a false ideology and manipulate them into not being able to formulate their own opinions but instead follow a certain opinion created in propaganda.