Everyone should take the 9 minutes and watch Jon Stewart's monologue from the 9/11 episode of the Daily Show.
The message couldn't be more appropriate 20 years later.
Don't even have to watch, just listen.
http://www.cc.com/video-clips/1q93jy/the-daily-show-with-jon-stewart-september-11–2001
or
https://www.dailymotion.com/video/x36h4qn
or
https://vimeo.com/225027634