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US cities heighten security after Paris attack
As the investigation continues into Friday's terror attack in Paris, major cities across America have taken extra security precautions. MSNBC's Adam Reiss joins to discuss.
Attacks on Paris
Bataclan reopens on eve of attack anniversary02:05
A history of the terror attacks in France01:07
Paris attack survivor reflects 6 months later03:17
ISIS has head start on Western infiltration11:12
ISIS develops new skill at bomb-making06:53
Paris terror suspect ran a bar, 'sold hashish'03:29