Swedish film about racism in school.

I saw this film when I was a kid, and I want to know which one it was. There's not much I remember from the film, but there's three scenes that I remember quite clearly.

I believe the film was from the 80s, and the main character was a boy living with his father. His father has gotten a new girlfriend who's from India or Pakistan I think, and the boy is very ashamed of that because all of his friends at school are racists. He won't let his friends in when she's there.

Also, there is a black girl in his class. At one occasion when she enters the classroom, one of the boys (don't remember if it's the main character) puts a needle between his fingers, and offers to shake her hand. When she takes his hand, the needle goes into her hand, and she screams.

By another occasion, the teacher enters the class room, and all the windows are wide open (this is mid winter), and all the children sits with all their winter clothes on. The teacher asks them why they have their jackets etc. on, and they answer "because it's cold". When she asks them why they've opened the windows then, they answer: because the black girl smells bad. The teacher goes to the black girl and says she's not to mind them.

Do anyone know which film this is? I'd love to know. I remember being very angry with the teacher for not doing enough for the girl.

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They blew up Congress!!! HAHAHA!