A memorial to Benazir Bhutto, former Pakistani prime minister, sits at the site of her assassination in December 2007 during a political rally in Rawalpindi, Punjab province. Bhutto was the first woman to rule a democratic Islamic nation and took a stark stance against religious extremism. Throughout her time in politics, she was threatened by the Taliban, al-Qaeda, and local extremist groups. Image by Sara Hylton/National Geographic. Pakistan, 2019.