This week-end, San Francisco hosted the national championships of the Robot Fighting League during which nonviolent and violent robot compet took place inside a “specially built bulletproof robot fighting arena.”
![sp_robots047_lm[1].jpg](http://www.we-make-money-not-art.com/yyy/sp_robots047_lm%5B1%5D.jpg)
More pictures of the contenders.
Via SFGate.