To accept the group mentality and opinion as fact without examination.
Not only to be told what to do, but accepting the paradigm of thought as absolute thereby removing the weight of personal responsibility in the making of decisions.
(a) he wanted to steal oil
(b) as a revange for 9/11
(c) because Saddam was going attack the US with wmds
(d) to drive up the price of Haliburton stock
(choose any that apply -- these and other childish slogans are floating around, sometime in combination).
People + Sheep = Sheeple
People who wear Converse trainers.
'I support the liberal democrats.'
'How many people in here are wearing bowling shoes and converse trainers in this place, what sheeple idiots.'
Also used inaccurately by angst-ridden (ie virgin) teenagers and Korn fans (not always the same thing, strangely) to describe those older, richer, better looking, better dressed, more sexually successful etc... than themselves.