In an unusual move, the global rights organization Amnesty International has dispatched a delegation of observers and organizers to Ferguson, Mo., to provide direct support to community members and to observe the police response to protests. The 13-person delegation, which arrived late last week, was the first of its kind deployed by Amnesty within the United States, the organization said. The St. Louis suburb has been filled with unrest since since Michael Brown, an unarmed black teenager, was shot and killed on Aug. 9 by Darren Wilson, a white police officer. That unrest intensified once again on Sunday, with reports...