'I'm going to kill a black person'

"The doctors testify that Mr. Thompson's motivation in stabbing Taneka Talley was purely race motivated," attorney Kelly Hamilton wrote. "As such, it is our belief that our denial in this matter is proper."

The compensation law doesn't consider an on-the-job injury to be work-related if the motives were entirely personal - for example, if an estranged lover or spouse comes to the workplace and attacks an employee because of a private grudge.

The line can be hard to draw when one worker assaults another for personal reasons or when the injured employee was on a personal errand or instigated the assault.


http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/12/03/MN1514DSB4.DTL

While it sounds shitty, I'm afraid the store may be right in this case. If I hire a kid to mow my lawn and they get hurt by the mower, or by something I did, or own, or in the process of doing something I expected them to do, then I'm responsible. If however someone walks onto my property with no other purpose than to stab them it was not my obligation to prevent that.