The development of chemical warfare around the time of World War I led to the use of tear gas as a weapon by civilian police forces.

How can we help students understand George Floyd's death in the context of institutionalized racism?

The first Earth Day took place fifty years ago, so most people don't remember how it happened or what it accomplished. It's time for a look back.

A lone resister is easy to take down, but there is safety in numbers, in conspiracies of silence, in refusals to testify against one's neighbors.

Giving Stonewall too much credit misses the movement’s growing strength in the 1960s, sociologists note.

France's Yellow Vests have been protesting for months on end. Such protests are an integral part of France's culture.

The 1968 DNC was overshadowed by anti-war demonstrations. The Walker Report describing the events became controversial for the obscenities it contained.

Since the 16th century, anonymous authors have been posting provocative political messages on or near these Roman statues.

Over a week and a half starting on March 1st, 1968, more than 10,000 students in mostly Chicano schools took part in what became known as the East Los Angeles School Blowouts.

The integration of collegiate and professional sports parallels the civil rights movement, but in important ways it was a whole different track.