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. thats a big number of people and if youre going to put every one of those people under surveillance talk about in general about ten guys per person. youre talking hundreds thousands of law enforcement personnel to k...
Source: archive.org