This is today's lesson:

This picture is a painting from Norman Rockwell ( an American artist).
It represents 4 marshalls (federal officers) and a little Black girl
in the middle. The marshalls have got grey suits, one of them has
an official paper in his pocket. They are probably there to
protect the girl. The little girl is at the center of the painting, she is
walking to school (she has books, copybooks, pens and a ruler in her
hands). She is dressed in white (she has a white ribbon in her hair, a
white dress, white shoes and socks). It represents innocence and
peace. Next to the little girls, there is a  smashed tomato, the stain
(=tache) looks like blood. It shows the violence and racism of the
White community.

This painting dates back to the 1960s (nineteen sixties), when the
American society was divided in two. It was called segregation.