From PRI, Public Radio International and KCRW Santa Monica, this is To the Point.

The history and possible future of urban violence.

Hello again, I'm Warren Alney, and this is To the Point from Public Radio International.

A daily look at the issues Americans care about most.

Forty years ago, widespread violence broke out in Detroit and Newark,

just as it had two years before in Rochester, Philadelphia, and Los Angeles.

Civil unrest caused deaths, injuries, and property damage in 150 cities during the next few years,

but Los Angeles broke all the records in 1992.

On to the point, symptoms of urban decay include unemployment, lack of affordable housing, racism,

and police abuse.

But what does it take to trigger a riot?

And what's the state of American cities today?

On reporter's notebook later on, The Election in Turkey.

First, here's the news.

Support for To the Point comes from subscribers of KCRW Santa Monica

and from the Public Radio International Program Fund,

whose contributors include the Ford Foundation

and the John D. and

Catherine T. MacArthur Foundation. Hello again, Mormon-Alney, back with To the Point. America's

last massive civil disturbance took place in Los Angeles in 1992, but urban decay continues in many

cities. On To the Point, what does it take to trigger a riot? Why do they often occur during

wartime? What's the state of

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