In a year with so many world-shaking moments, our strongest visual stories covered impeachment, outbreak, caucuses, primaries, donations, dele­gates, shutdown, jobs, deaths, coughing, hos­pitals ...

Warning: This report contains graphic images of injuries inflicted ... Firing too closely increases the risk of serious injury. Tear gas isn’t technically a gas, says Glatter, the ER physician.

The images of immigrant mothers and their young children choking on tear gas at the U.S.-Mexican border become even more jarring with this realization: The use of this chemical weapon is not ...

Before dawn, riot police and hundreds of protesters gathered on roads leading to a square where the Hong Kong and Chinese flags were set to be raised. The ceremony, which was attended by Hong Kong ...

But when officers launched tear gas into the crowd, Chowdhury pulled off her mask as she gasped for air. “I couldn’t breathe,” she said. “I felt like I was choking to death.” Chowdhury ...

Demonstrations across the United States were mostly peaceful Sunday. But in Seattle, police fired tear gas at demonstrators even though the city temporarily banned its use days earlier.

Tear gas could increase the spread of the disease. As protests erupt across the country in the wake of George Floyd's death, police have been using tear gas on those who are protesting.

(This video contains scenes of graphic violence ... Videos showed police officers in recent nights using batons, tear gas, pepper spray and rubber bullets on protesters, bystanders and journalists ...

Police have made heavy use of tear gas to break up the ongoing protests in Ferguson, Missouri. Tear gas is effective at dispersing crowds because its key ingredient — called 2 ...