I really don't see what was "dangerous" about what Joe Biden said here.
Let's see: the Republican party is frequently labeled as racist and feudal and the sitting President is a black Democrat. Comments like this one stoke racial fears or a class war. Take your pick.
Yes, Biden sincerely believes that Romney wants to enslave the "99%" and wasn't joking. Tell yourself whatever you need to hear to justify your pulling the lever for the Republican...
Oh, well, as long as we can say "We didn't really mean it!" I guess you'll excuse a lot of those Republican comments.
Didn't think so.