The holiday weekend was a particularly violent one for Boston. Four people were killed and nine were wounded in attacks throughout the city, including a stabbing incident in the South End. A young woman was also raped on the banks of the Charles River in Brighton during the city's Fourth of July celebration. 

Many of the weekend shootings appear to be gang-related, and the mayor held an emergency meeting yesterday afternoon to discuss ways to avoid more bloodshed. "It's so frustrating," he told reporters. (You can read more here in the Globe about the press conference.)

Police commissioner Edward F. Davis told reporters that violence can spike on holiday weekends because of heavy drinking at parties, where people often bring guns.

On Tuesday police published a list of crimes that took place over the weekend, including when and where they occurred. It is as follows: 

July 4

• One person shot to death. 7:16 p.m. 60 Hollander Street Roxbury. 
• Three shot, one fatally. 9:55 p.m. 36 Norton Street Dorchester. 
• A 19-year-old woman was reportedly raped by a man she knew. Around 11 p.m. by the John W. Weeks Footbridge in Brighton. 
• Two people stabbed. One victim is in critical condition and one victim is stable. One person is under arrest. 11:26 p.m. 120 Huntington Ave., South End. 
• Two people stabbed and neither suffered life-threatening injuries. 11:33 pm. 52 Thomas Park, South Boston. 
• One person was shot, and he went to Carney Hospital with injuries that were not life-threatening. 11:34 p.m. Talbot Avenue and Washington Street, Dorchester. 
• One person was found in this location but believed to have shot elsewhere. He was taken to the Carney, where he was in stable condition. The Area B-3 police station is at this intersection. 11:36 p.m. Blue Hill Avenue and Morton Street, Mattapan. 
• One person was stabbed and was taken to Boston Medical Center with non-life threatening injuries. 11:54 p.m. 975 Blue Hill Ave., Dorchester. 
• Police said a person walked up to the vehicle and opened fire at the two men inside. The car lurched forward and smashed into a building. Two people were shot, and both later died from their wounds. 12:15 a.m. (July 5) 245 Columbia Road, Dorchester.