We turn now to Washington for more reaction to this brazen attack. The Obama administration is sending a Marine anti-terrorism unit to bolster security in Libya. It's also taking precautions elsewhere. The stepped up security comes as the State Department mourns its losses. NPR's Michele Kelemen has that story.
MICHELE KELEMEN, BYLINE: Shock and sadness hovered over the State Department as Secretary of State Hillary Clinton spoke of the devastating losses of four foreign service personnel.
This morning, Secretary of State Hillary Clinton said this about the slain ambassador, Christopher Stevens.
SECRETARY HILLARY CLINTON: He risked his life to stop a tyrant, then gave his life trying to help build a better Libya. The world needs more Chris Stevenses.
BLOCK: Earlier this year, before Chris Stevens assumed his position as ambassador to Libya, he made a video, subtitled in Arabic, directed to the Libyan people. It was posted on the U.S. Embassy's website and on YouTube.
Every election season Republicans and Democrats tried to rally their base and to go after undecided voters. They're increasingly using the Internet in Get Out The Vote efforts.
NPR correspondent Shankar Vedantam, who reports on social science research, joins me now to talk about how Facebook could become a potent weapon in going after the biggest untapped voting bloc in the nation. Shankar, welcome.
SHANKAR VEDANTAM, BYLINE: Hi, Melissa.
BLOCK: Who are these mystery voters, this untapped voting bloc that we mentioned?
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Thousands gathered today at the World Trade Center site in New York. They marked the 11th anniversary of the September 11th terror attacks. Family members of the victims took turns reading the names of the nearly 3,000 people who died in New York, Washington and Shanksville, Pennsylvania.
For many years — perhaps even decades — Detroit has been the poster child for economic malaise. Adjusting for inflation, per capita income in metro Detroit dropped more than 20 percent between 1999 and 2010.
Some analysts say regional cooperation might have helped keep Detroit above water when the car industry sank, but that entrenched divisions that pit the city against its suburbs, and blacks against whites, have hindered that.
From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.
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I'm Melissa Block. And we begin this hour with day two of the Chicago teachers' strike. Some 350,000 students are affected by the walkout in the nation's third-largest school district. We'll have a report on how the strike is playing out in the presidential race.
CORNISH: But, first, NPR's Sonari Glinton reports on how parents, churches and local charities are scrambling to figure out what to do with so many kids with nowhere to go.
Today, in Reno, Nevada, Mitt Romney previewed the pitch he'll make at that foreign policy debate. National security and foreign policy were the topics of a speech he delivered at the annual National Guard convention.
MITT ROMNEY: With less than two months to go before Election Day, I would normally speak to a gathering like this about the differences between my and my opponent's plans for military and for our national security. There is a time and place for that, but this day is not that.