4 teens charged in murder of Chicago police officer during violent crime spree.

Four teenagers have been charged with first-degree murder in the fatal shooting of Chicago police officer Aréanah Preston. The suspects were also involved in a robbery spree, which included robbing Preston before shooting her. One of the suspects bragged about the killing, leading to their arrest. The suspects have all been previously convicted of robbery as juveniles. Preston's mother called for more love and support for young people to prevent such crimes.