Really? Which incident is this?
http://www.cbsnews.com/stories/2010/05/11/national/main6472296.shtml
http://www.npr.org/templates/story/story.php?storyId=4651126
http://www.philly.com/philly/news/93137669.html
The bombing resulted in 11 deaths (including 5 children) and the destruction of 65 homes in the resulting fires.
An investigative commission formed by the Philadelphia Mayor issued its report on March 6, 1986 denouncing the actions of the city government, stating that “Dropping a bomb on an occupied row house was unconscionable.”
No one from the city government was charged criminally.