these platforms arengagements a. instagram is another platform that's earnings and engagement over everything else that i think is the problem. >> and evan, how challenging is that for people who are of the law enforcement side trying to do to these right wing terrorist groups of what they were able to do with isis? how challenging is this? >> these folks are using individual platforms that are closed off to law enforcement. in terms of intercepting their content of mainstream platform, there is been a number of different solutions highlighted. these systems are imperfect. they're never going to find someone before the feedback -- facts. as long as major social media