It seems that no place is entirely safe from violence and terrorism. The memory of September 11, 2001 remains a painful scar on the national consciousness of the United States, but terrorism is a worldwide problem. In 2004, Madrid, Spain, experienced horrific train bombings that killed nearly 200 and injured 2,000 more. In 2007, dual bombings in Iraqi markets ripped apart 800 victims and injured about 1,500 more. In 2016, an ISIS-claimed attack killed 29 at a Bangladeshi café. ISIS-linked fighting rages in Mindanao, Philippines. Boko Haram has terrorized Nigeria for years.