Editor’s Note: The Islamic State’s territorial expansion and burgeoning online presence seemed to rise together. As the group lost territory, however, its online presence evolved. Jade Parker and Charlie...

Editor’s Note: Rampage killings are a longstanding U.S. problem that is only growing worse. After many attacks, law-enforcement officials discover social media postings or writings that indicated murder ...

Editor’s Note: The relationship between soldiers and civilians is a fundamental question for any democracy. In the United States, the military has long been respected, but only recently has it been idoli...