Knife attack at Paris police headquarters, 5 dead https://www.dw.com/en/knife-attack-at-paris-police-headquarters-5-dead/a-50689638 Islamic extremists have repeatedly targeted French police in France in recent years. In 2017, a gunman opened fire on the Champs-Elysees boulevard, killing one officer before he was shot to death. In 2016, an attack inspired by the Islamic State group killed a police officer and his companion.