The attack in Highland Park was not the only shooting over a violent holiday weekend.

The attack at the Highland Park Fourth of July parade was the largest and highest-profile shooting, but far from the only one, over the holiday weekend.

It was one of two mass shootings in the Chicago region alone on Monday. Less than 12 hours earlier, five people were injured in a shooting on Chicago’s South Side.

The Highland Park shooting stood out in its size (at least three dozen injured), its deadliness (at least six killed) and its location, a wealthy suburb that does not often experience such violence

But it was part of a pattern: the brutal ubiquity of gun violence in a nation with more firearms than people

As of early Monday morning, at least 57 people had been shot in Chicago over the Fourth of July weekend, nine of them fatally, according to NBC Chicago.

That did not include the toll from the Highland Park shooting outside the city.