http://sfappeal.com/news/2012/05/sfpd-seeks-suspects-in-fatal-dog-shooting.php
http://www.whas11.com/news/LMAS-offers-reward-after-dog-shot-multiple-times-dies-151417805.html
Ok, now was both these dogs running loose, attacking people or pets? We don't know but strong chance that was the case. Could be some people are tired of irresponsible owners who can't contain their dogs.