Chicago once again boiled over this weekend with gang violence driven by the Mexican cartels and their drug trade. Forty were shot and four killed, including an 11-year-old girl.

The girl, Shamiya Adams, was struck by a stray bullet that entered through a window where she was attending a sleepover.

The violence was so heavy that during a 12-hour period between Friday evening and Saturday morning, 22 people were shot in Mayor Rahm Emanuel’s city.

It was during this 12-hour bloodletting that the girl was shot in the head in the West Garfield Park neighborhood.

Six hours later, a second person was gunned down in Chicago. By Sunday afternoon, two more were killed.

Chicago’s NBC affiliate reported that between Friday at 12 a.m. and Sunday afternoon, 40 had been shot over the July 18 weekend.

Those killed were 11-year-old Shamiya and three males, 21, 24, and 30 years of age.

Thus far in July, 34 Chicagoans have been killed and 188 wounded. 

Follow Warner Todd Huston on Twitter @warnerthuston or email the author at igcolonel@hotmail.com.