This is the best summary I could come up with:

Milo, who was only identified by his first name, had been shot in the head in a chilling example of “gross and completely reckless gang violence,” prosecutor Lisa dos Santos said.

Swedish media, which have published photos of Milo with the permission of his family, said the body had been moved to the woods after the boy — who was not known to the police — was killed.

Criminal gangs have become a growing problem in Sweden, with an increasing number of drive-by shootings, bombings and grenade attacks.

In June, a man with an automatic weapon opened fire in the early morning outside the entrance to a subway station in Farsta, a suburb south of Sweden’s capital, and struck four people.

The violence reportedly is fueled by a feud between a dual Turkish-Swedish man who lives in Turkey and his former lieutenant whose mother, a woman in her 60s, was shot Sept. 7 and later died of her wounds.

“Several boys aged between 13 and 15 have been killed, the mother of a criminal was executed at home, and a young man in Uppsala was shot dead on his way to work,” police chief Anders Thornberg told a news conference on Sept. 13.

The original article contains 505 words, the summary contains 203 words. Saved 60%. I'm a bot and I'm open source!

and who are these gangs?

do we wonder why people hate on them?