Today's Takeaways: ISIS Propaganda, Costly Gambles, and Evolving Human Values

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Flowers placed on the Boston Marathon finish line on Boylston St. on April 8, 2015, the day Dzhokhar Tsarnaev, 21, was found guilty on all 30 counts related to his involvement in the 2013 bombings.
( Scott Eisen / Getty )
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