domestic terrorism

AP Photo/Martin Meissner

HANAU, Germany — A German who shot and killed nine people of foreign background in a rampage that began at a hookah bar frequented by immigrants had posted an online rant calling for the “complete extermination” of many “races or cultures in our midst,” authorities said Thursday.

Andres Leighton/AP

WASHINGTON — Following two mass shootings over the weekend, President Donald Trump called on federal authorities Monday to do a better job identifying violent extremists in the U.S. But that won't be easy.