CNN The Situation Room May 8, 2015 21:06:00
Social media. >> reporter: extremely difficult for a number of reasons. u.s. law enforcement. hundreds of investigations for people who have made contact via social media and thousands that may have followed jihadi websites or made connections or followed twitter accounts, et cetera. that's a big number of people and if you're going to put every one of those people under surveillance talk about in general about ten guys per person. you're talking hundreds thousands of law enforcement personnel to keep them under surveillance. it become as judgment call. we saw that in the case of the text shoo...
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