Workplace violence: 9 of the worst cases

http://www.onlinebusinessdegree.org/2012/05/15/the-9-worst-employee-freak-outs-in-history/

It's a two-way street... angry customer threw hot coffee at Dunkin' Donuts clerk:

http://somerville.patch.com/articles/angry-man-arrested-for-throwing-coffee-at-dunkin-donuts-worker