waving shoes in...German culture

"German aristocratic defence minister Guttenberg has lifted passages of his law dissertation without correctly attributing them in footnotes questionable origin.  More than 100 pages of his 475-pages doctoral thesis were copied from other works.  The University of Bayreuth in Bavaria has already withdrew Guttenberg´s doctor title.  Minister Guttenberg has been most popular politician and even a potential future candidate for chancellor.  In the front of Ministry of Defence at Stauffenbergstrasse in Berlin protesters wave their shoes in the air and called for the resignation of minister."   As is known, waving shoes is highly insulting in...German culture.(thanks Hamzeh)