"This is a public health issue."

[Content Note: Gun violence; injury; death.]

A shooter is dead and 22 people have been injured, some seriously, during a shooting at an art event in Trenton, New Jersey:

An all-night arts and music festival turned deadly early on Sunday morning when gunfire erupted in a crowd, sending people stampeding and leaving one suspect dead and 22 people injured, authorities said.

Seventeen people were treated for gunshot wounds, said Mercer county prosecutor Angelo Onofri. Four, including a 13-year-old boy, remain in critical condition late on Sunday morning.

Two suspects opened fire around 2.45am during the Art All Night Trenton festival that showcases local art, music, food and films. One of the suspects, a 33-year-old man, was killed, authorities said. Onofri said he believes police killed him. Another suspect was in custody.

Onofri said a "neighborhood beef" was behind the shooting inside the historic Roebling Wire Works Building.

...Trenton mayor Eric E Jackson said the violence could not be "discarded as just random violence. This is a public health issue."

That's exactly right. This is a public health issue.

A grave public health issue to which we're becoming so inured that a shooting which left 22 people injured is no longer front page news.

This country has lost its way.