What we know, don't know about Freddie Gray's death

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The arrest and death of Freddie Gray in Baltimore has sparked protests and accusations of police brutality. But it's unclear how Gray, who was arrested on a weapons charge April 12, suffered a severe spinal cord injury that led to his death seven days later.http://feeds.feedburner.com/~ff/rss/cnn_us?d=yIl2AUoC8zA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=yLMY5DrvSrE:QN1H8K500Vg:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/rss/cnn_us?d=7Q72WNTAKBA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=yLMY5DrvSrE:QN1H8K500Vg:7Q72WNTAKBA) http://feeds.feedburner.com/~ff/rss/cnn_us?i=yLMY5DrvSrE:QN1H8K500Vg:V_sGLiPBpWU</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=yLMY5DrvSrE:QN1H8K500Vg:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/rss/cnn_us?d=qj6IDK7rITs</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=yLMY5DrvSrE:QN1H8K500Vg:qj6IDK7rITs) http://feeds.feedburner.com/~ff/rss/cnn_us?i=yLMY5DrvSrE:QN1H8K500Vg:gIN9vFwOqvQ</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=yLMY5DrvSrE:QN1H8K500Vg:gIN9vFwOqvQ)
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