People gather near a makeshift memorial for Michael Brown in Ferguson, Missouri last night. Photograph: Joshua Lott/Reuters

The father of a black teenager who was shot dead by a white police officer in Ferguson, Missouri earlier this month has appealed for calm ahead of h(...)

Police officers stand along business fronts on West Florissant Avenue as demonstrators protest the shooting death of Michael Brown in Ferguson, Missouri. Photograph: Roberto Rodriguez/EPA

One person was shot and critically wounded and seven arrested early on Sunday as police in Ferguson, Missouri, clashed with protesters when a curfew w(...)

A prison guard outside a solitary confinement cell at Pelican Bay prison in California.  Since July 8th there has been widespread participation in a  hunger strike protest over indefinite solitary confinement. Photograph: Jim Wilson/The New York Times

Convicted killer Todd Ashker is the unlikely legal brain behind the largest prison protest in California’s history, a hunger strike which today enters(...)

A protester  walks past a line of Los Angeles police officers as they try to remove protesters following the George Zimmerman verdict.   Photograph: Jason Redmond/Reuters

President Barack Obama last night called for “calm reflection”, after a Florida jury’s acquittal of neighbourhood watch man George Zimmerman for the m(...)

A protester blocks an Expo Line train following the George Zimmerman verdict in Los Angeles, California. Photograph:  Jason Redmond/Reuters.

A Florida jury has acquitted George Zimmerman for the shooting death of unarmed black teenager Trayvon Martin, setting free a man who had become a po(...)