U.S. military issues warning about shooters at ‘Joker’ screenings

The U.S. military has advised service members to be alert to the potential for mass shootings at screenings of the upcoming DC villain movie "Joker." The warning went out to service members following the distribution of a bulletin from the FBI on the risk of possible violence alluded to in social media posts from incel extremists, who have made threats to recreate the theater shootings in Aurora, Colorado, during screenings of "The Dark Knight Rises."