The brief summary from me: People holed up in a Philadelphia row home. Cops drop a C-4 bomb on the roof, dozens of homes burn down as a result, 11 people died, including children.

The brief summary from Wikipedia:
"In 1985, MOVE relocated to a row house at 6221 Osage Avenue in the Cobbs Creek area of West Philadephia. On May 13, 1985, responding to months of complaints by neighbors that MOVE members broadcast political messages by bullhorn at all hours and also about the health hazards posed by of the piles of compost, the police department attempted to clear the building.[8] After a standoff, police lobbed tear gas canisters at the building and the fire department battered the roof of the house with two water cannons. A burst of gunfire came from the house, touching off a return volley of thousands of rounds from police lasting 90 minutes. The police tried to remove two wood-and-steel rooftop structures, called bunkers by the police, by dropping a four-pound bomb made of C-4 plastic explosive and Tovex, a dynamite substitute, onto the roof.[9] The resulting explosion caused the house to catch fire, igniting a massive blaze which eventually consumed almost an entire city block.[10] Eleven people, including John Africa, five other adults and five children, died in the resulting fire.[11] The resulting fire was unable to be put out due to the fact that firefighters were being shot at. Ramona Africa and one child, Birdie Africa, were the only survivors.

Mayor W. Wilson Goode soon appointed an investigative commission called the PSIC or MOVE commission. It issued its report on March 6, 1986. The report denounced the actions of the city government, stating that "Dropping a bomb on an occupied row house was unconscionable."[12]

In a 1996 civil suit in U.S. federal court, a jury ordered the City of Philadelphia to pay $1.5 million to a survivor and relatives of two people killed in the incident. The jury found that the city used excessive force and violated the members' constitutional protection against unreasonable search and seizure.[11]"

Anniversary coverage from Philly paper:
http://www.philly.com/philly/news/93137669.html