It appears that Hilton Hotels is a big supporter of terrorism. According to the Counterterrorism Blog the terrorist group Hizb ut-Tahrir is having a conference on imposing Islam on all Americans. http://counterterrorismblog.org/ That appears to be just fine with Hilton Hotels and the Hilton Oak Lawn. (708) 425-7800 9333 S Cicero Ave, Oak Lawn, IL 60453, OALHI_GM@hilton.com
Give them a call and let them know your opinion of those who assist terrorists.