Tactical deputies’ decision to use pyrotechnic tear gas grenades at the conclusion of their confrontation with multiple murder suspect Christopher Jordan Dorner has aroused some suspicion that ...

Federal agents' heavy use of tear gas is raising concern about harmful effects to protestors and neighborhoods. A toxicologist explains what it is and its health effects.

Parents in Minneapolis say a routine drive home from a middle school basketball game turned into a nightmare when federal immigration agents fired tear gas that rolled under their SUV with six ...

A lawyer for nine residents of Gray’s Landing and the apartment building’s managers argued Friday that the “massive” amount of tear gas and chemicals used by federal officers outside the ICE office ...