The Philadelphia City Council this week formally apologized for the decision in 1985 to drop an improvised bomb on a rowhouse occupied by the MOVE separatist group, a desperate action that resulted in a fire that killed 11 people and destroyed 61 homes.

The resolution, approved on Thursday, marked the first time that the city had formally apologized for the action. The measure, which also calls for an annual day of remembrance on May 13, the anniversary of the bombing, was sponsored by Jamie Gauthier, a city councilwoman who grew up near the West Philadelphia neighborhood where the bombing happened.

Ms. Gauthier recalled watching the aftermath of the bombing on television as a child, and said that the neighborhood was only now starting to fully recover from the devastation.

“There have been divisions in our city between police and community for decades, and I think if we had done the true work of acknowledging what happened with MOVE and with other acts of police violence, and we had really worked on not only the acknowledgment but building better relationships and working towards reconciliation, we wouldn’t find ourselves in the place we are now,” she said in an interview on Friday.