Is this terror or a mass killing?

Is this terror or a mass killing?

Following the shooting in Munich CNN's Atika Shubert discusses the difference between mass killings and terrorist attacks.

01:56 - Source: CNN

Thwarted terror plots 15 videos

Is this terror or a mass killing?

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Man accused of plotting attack at parade

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Armed police operate in Saint-Denis, a northern suburb of Paris, Wednesday, Nov. 18, 2015. Police say two suspects in last week's Paris attacks, a man and a woman, have been killed in a police operation north of the capital. Two police officers have been injured in the standoff. Police have said the operation is targeting the suspected mastermind of last week's attacks, believed to be holed up in an apartment in Saint-Denis with several other heavily armed suspects. (AP Photo/Francois Mori)

What to do in the event of a terror attack

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The psychology of terror

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PARIS, FRANCE - NOVEMBER 13: A medic tends to a man November 13, 2013 in Paris, France. Gunfire and explosions in multiple locations erupted in the French capital with early casualty reports indicating at least 60 dead. (Photo by Thierry Chesnot/Getty Images)

When is something 'terrorism'?

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What FBI director wants Americans to know about terror

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An injured woman leaves the scene at Brussels airport after explosions rocked the facility Tuesday morning.

The vulnerability of 'soft targets' to terror

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An exclusive look inside the Terrorist Screening Center

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From the left, British businessman Chris Norman, Anthony Sadler, a senior at Sacramento University in California, French President Francois Hollande, U.S. Airman Spencer Stone, and Alek Skarlatos a U.S. National Guardsman from Roseburg, Oregon pose at the Elysee Palace, Monday Aug.24, 2015 in Paris, France. Hollande pinned the Legion of Honor medal on U.S. Airman Spencer Stone, National Guardsman Alek Skarlatos, and their years-long friend Anthony Sadler, who subdued the gunman as he moved through the train with an assault rifle strapped to his bare chest. The British businessman, Chris Norman, also jumped into the fray. (AP Photo/Michel Euler, Pool)

Train heroes honored for thwarting attack

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How vulnerable are citizens to terror attacks?

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In this photo provided by Christina Cathleen Coons, a person lies on the floor after an incident on a high-speed train traveling from Amsterdam to Paris on Friday, Aug. 21, 2015. A gunman opened fire on the train wounding several people before American passengers subdued him, according to officials and one of the Americans involved. (Christina Cathleen Coon via AP)

Exclusive cell phone video from inside train

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FBI: Several July 4th terror attacks thwarted

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American teen arrested in alleged ISIS plot

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New details released in Boston terror plot

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