Depends on the neighborhood. Two different occasions in Rochester, NY, within two weeks of my moving out, people were killed within eyesight of my former homes. One was a robbery/murder, the other was a gangland initiation, totally random killing of a guy riding his bike on a bridge over the Lower Falls of the Genesee River. The latter neighborhood, my apartment was up on a hill, and some weeks, in the summer, it was very much like being in a war zone -- multiple shots, or bursts of shots, from multiple directions, throughout the night, many nights in a row. There was a mob beating of a woman around the same period. There was a drug raid across the street a few weeks previous. There were open-air drug markets on either side of my neighborhood, and all the accompanying violence.
My favorite recollection here was the time I heard what sounded like two people with pistols shooting at one another, because of the rapidity and succession of the shots. Turns out it was two teens shooting at an old lady after a botched robbery attempt, and despite 10-12 shots fired, neither one managed to hit her.