CHICAGO — Police anxiety in the era of ever-present cellphone cameras and viral videos partly explains why violent crime has risen in several large U.S. cities this year, FBI Director James Comey said Friday.

Comey told several hundred students during a forum at the University of Chicago Law School that it’s critical to do more to address a widening gulf between law enforcement and citizens in many communities, particularly African-Americans.

Read more in The New York Times.