Dave Cullen, author of "Columbine," discusses the Parkland, Fla., shooting survivors and says that while he doesn't foresee the protests slowing, he's not sure they'll lead to lasting change. For the full interview, [click here](https://cheddar.com/videos/from-columbine-to-parkland-a-journey-of-gun-reform).

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Mexican Railway Suspends Trains Due to Migrants
Mexico's largest railroad company said it was suspending operations of its cargo trains due to the massive number of migrants that are illegally hitching rides on trains moving toward the U.S. border.
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