https://blog.bufferapp.com/social-media-history
http://socialmediasun.com/impact-of-social-media-on-society/
https://mmgmemphis.com/blog/5-non-profit-social-media-campaigns-changed-world/
http://www.people-press.org/2013/04/23/most-expect-occasional-acts-of-terrorism-in-the-future/
https://en.wikipedia.org/wiki/Boston_Marathon_bombing
http://www.govtech.com/public-safety/social-media-big-lessons-from-the-boston-marathon-bombing.html
https://en.wikipedia.org/wiki/George_Zimmerman
https://en.wikipedia.org/wiki/Black_Lives_Matter
https://en.wikipedia.org/wiki/Alicia_Garza
https://storify.com/guardian/egypreselex-top-tweets-from-election-day
https://www.socialflyny.com/social-media-celebrates-lovewins/
https://en.wikipedia.org/wiki/Ice_Bucket_Challenge
https://www.usatoday.com/story/news/2017/07/03/ice-bucket-challenge-5-things-you-should-know/448006001/
http://www.journalism.org/2012/11/28/role-social-media-arab-uprisings/
https://en.wikipedia.org/wiki/Social_media_and_the_Arab_Spring
https://en.wikipedia.org/wiki/Arab_Spring
https://www.nasa.gov/feature/highlights-from-scott-kellys-year-on-social-media
https://www.engadget.com/2016/12/21/nasa-dominated-space-and-social-media-in-2016/
https://en.wikipedia.org/wiki/Keep_A_Breast_Foundation
http://keep-a-breast.org/breast-cancer-checkyourselfie/
https://www.nytimes.com/2017/05/09/technology/wendys-nuggets-twitter.html