1960’s SDS was run by a small unified elite. Horizontalist ideology made them unaccountable.
The spirit of ‘68: rebellion in Western Europe and North America, 1956-1976
By Gerd-Rainer Horn 2007
http://books.google.com/books?id=9AcsdkRkVycC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false