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How U.S. is countering Islamic extremist propaganda machine

How U.S. is countering Islamic extremist propaganda machine

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8:25
Reflecting on the Charleston church massacre, one year later

Reflecting on the Charleston church massacre, one year later

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5:38
Dolphins moving from concrete tanks to seaside sanctuary

Dolphins moving from concrete tanks to seaside sanctuary

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9:45
Remember them: The lives cut short in the Orlando massacre

Remember them: The lives cut short in the Orlando massacre

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3:13
Inside Russian hacking of Democrats’ oppo research on Trump

Inside Russian hacking of Democrats’ oppo research on Trump

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7:23
It’s the weapon of choice for U.S. mass murderers: the AR-15

It’s the weapon of choice for U.S. mass murderers: the AR-15

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4:49
New details of Orlando gunman's life raise more questions

New details of Orlando gunman's life raise more questions

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4:04
An Orlando Muslim’s heartfelt words on mass shooting

An Orlando Muslim’s heartfelt words on mass shooting

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1:28
Study slams Oakland police department for racial bias

Study slams Oakland police department for racial bias

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8:56
The daunting struggle to diversify elite public high schools

The daunting struggle to diversify elite public high schools

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9:02
Measuring the ‘Trump effect’ on the 2016 presidential race

Measuring the ‘Trump effect’ on the 2016 presidential race

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10:09
New book, ‘Listen Liberal,’ looks at Democratic party schism

New book, ‘Listen Liberal,’ looks at Democratic party schism

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6:27
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PBS News Hour

Finding the terror needles in the domestic haystack

How do intelligence and law enforcement agencies investigate and prevent domestic terror attacks like the Orlando shooting? Judy Woodruff talks to former National Counterterrorism Center Director Michael Leiter and former FBI terrorism investigator Ali Soufan for some perspective on national counterterrorism protocols.