Visit to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. What drives someone to commit politically motivated violence? The unsettling answer lies in daily habits. Behavioral historian Christiane-Marie Abu Sarah shares startling insights into how seemingly mundane choices can breed polarization that lead to extreme, even deadly, actions — and explains how to identify and bypass these behaviors in order to rediscover common ground. The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design — plus science, business, global issues, the arts and more. You're welcome to link to or embed these videos, forward them to others and share these ideas with people you know. Follow TED on Twitter: Like TED on Facebook: Subscribe to our channel: TED's videos may be used for non-commercial purposes under a Creative Commons License, Attribution–Non Commercial–No Derivatives (or the CC BY – NC – ND 4.0 International) and in accordance with our TED Talks Usage Policy (). For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), please submit a Media Request at
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