When we think of manipulating objects, we might think of a juggler, magician, chef, etc.
When we think of manipulating people, however, it almost always comes with negative connotations. These fascinate me as we're perfectly prepared to have our behaviour altered by charsimatic people, but not manipulative ones.
When I look up the origins of the word, the online etymology dictionary tells me it comes from Latin of filling the hand, to manipule, meaning a measure, to skillful handling of objects, to the skillful handling of people.
Was there any negative connotation of manipulation before these?
Are there any other words that carry a more definite negative that I'm not aware of?