http://chicago.cbslocal.com/2011/04/18/adolf-hitler-birthday-party-ends-with-a-bang/
http://www.huffingtonpost.com/2011/04/19/hitlers-birthday-party-in_n_851100.html
It is extremely disappointing that PJ Klem's would book an event for a group like this... and apparently they have admittedly done so in previous years, so the excuse that they "didn't know" is far from convincing.