The dissemination of a video showing a black teenager lost consciousness after being overcome by staff members of the centre for offenders, has aroused the excitement Wednesday in the United States.

Cornelius Fredericks, 16, died on the 1st of may, two days after he was tackled to the ground by a number of educators of the Academy Lakeside in Kalamazoo, Michigan, to have launched a sandwich on another young person in the centre's cafeteria.