If you are one of the many Coloradans looking to kill some time at work before the 4th of July holiday weekend, there's not a better, more informative way to spend three minutes than watching this excellent video from vlogbrothers on mass incarceration in America.  It's a master class in public policy, covering our prisons, corrections, and court system, in under 220 seconds.  Check it out, and have a safe and fun 4th!