Shocking surveillance video was played in a Manhattan courtroom yesterday, showing two boys dropping a shopping cart from a four-story-high overpass onto a mom at an East Harlem shopping mall.

In the footage, victim Marion Hedges appears as a small, vague black figure walking across a crosswalk. Suddenly, a steel and red-plastic Target shopping cart plummets onto Hedges, who is thrown forward.

The footage was screened by Manhattan Family Court Justice Susan Larabee as she determines the sentence for Jiovanni Rosario and Raymond Hernandez, both 12 at the time of the incident in October.