Yesterday's incident was a disaster waiting to happen.

CNN: South Africa shocked by police shootings at mine

When the BP -- when Deepwater Horizon, when the President ordered a moratorium on new permitting while he did a review on response on that, in that case, there exactly was a planned incident response to a deepwater disaster.

WHITEHOUSE: Press Briefing

The spark is almost always related to deep mistrust of police combined with an incident like a beating, a natural disaster, or a fatal shooting.

FORBES: Police Shooting Leads to Massive Riots, Looting in London

Andy Holt, prosecuting, said Stott, who had drunk eight pints of lager before the game, had sworn at police officers who arrested him following the incident and referred to the 1958 Munich air disaster.

BBC: Manchester

Interior Secretary Ken Salazar asked the academy in May to probe the Gulf disaster, saying he wanted "a set of fresh eyes on the issues surrounding" the incident and an independent, science-based understanding of what happened.

WSJ: Gulf Disaster Tied to BP's Lack of 'Operating Discipline'

Her most recent in-depth interview was with Joint Chiefs of Staff, General Martin Dempsey about the rise of ISIS and Admiral Thad Allen, National Incident Commander for the Deepwater Horizon spill in the Gulf of Mexico, gaining unprecedented access to the disaster site.

CNN: CNN Profiles - Kyra Phillips - Correspondent