Instapundit has brought up a Michael Kelly piece, focusing on two egregious Ted Kennedy episodes.
Kelly makes the point that Ted probably learned how to treat women from his grandfather Joe and from JFK. Maybe Ted had more of a need to get drunk, and get his dates drunk, to be a predatory drunk before taking action.
This all brought to my mind the fact that Ted was very much present on the night of the famous William Kennedy Smith alleged rape. Again, younger men learning from an older man. One detail I seem to recall, but I can't find now, is that on the night in question W.K. was actually asleep; Uncle Ted woke him up and said something along the lines of "let's go out for a drink," --or, whatever.