https://everytownresearch.org/extreme-risk-laws/
https://news.yahoo.com/fbi-documents-conspiracy-theories-terrorism-160000507.html
https://psmag.com/social-justice/is-a-conspiracy-theory-protected-speech
https://www.buzzfeednews.com/article/briannasacks/fbi-memo-conspiracy-theories-domestic-terrorism
https://www.nationalreview.com/2017/10/college-students-speech-can-be-violence/
https://www.nytimes.com/2019/08/06/us/politics/congress-gun-control.html