Presumably because the Somali-born-Muslim-turned-atheist, libertarian feminist is a staunch critic of Islam and the treatment of women in Muslim countries. In the past, authorities have thwarted a Muslim-based assassination attempt on her, Dutch rappers dissed her back when she was in the Dutch Parliament, and more. From The Sun (UK): "An al-Qaeda magazine encouraging terrorism has revealed its most-wanted list of Islam critics to kill — and it includes British author Salman Rushdie. The shocking article reads: 'Wanted: Dead or alive for crimes against Islam.' English language mag Inspire lists Mr Rushdie and American pastor Terry Jones — who burned the Koran on a 9/11 anniversary — among its targets. Alongside the images is the slogan: 'Yes we can. A bullet a day keeps the infidel away.'"
Ms. Hirsi Ali is ranked 10th on the list. Others on the list include Stephanie Charbonnie, Carsten Luste, Molly Norris, Flemming Rose, Morris Swadiz, Lars Vilks, Kurt Westergaard, and Geert Wilders.