https://www.afb.org/HelenKellerArchive?a=d&d=A-HK02-B228-F08-037.1.1
https://en.wikipedia.org/wiki/Helen_Keller
https://en.wikipedia.org/wiki/Thomas_Jefferson#Slavery
http://timashby.com/the-german-general-who-told-hitler-to-go-screw-himself/
https://en.wikipedia.org/wiki/Martin_Luther_King_Jr.