Highland Park police take a man into custody

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.

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. 

Ten hours before a gunman opened fire at the Fourth of July parade in Highland Park — where the median household income is nearly $150,000

and more than 80 percent of the population is white, with a large Jewish community — five people were shot around midnight on Monday in Parkway Gardens

Nationwide, the Gun Violence Archive, a tracking project that defines mass shootings as those in which at least four people are killed or injured

has counted 309 so far this year.

In Philadelphia, two police officers were shot near the Philadelphia Museum of Art on Monday night.

Both officers were transported to the Jefferson University Hospital and are in stable condition, according to the hospital’s media officers.