1. Mr. Atkins wants to clean up the area known as "Brown Town" before the news crew films it because he doesn't want any more bad publicity for the school and doesn't want to make the situation worse.
2. There is something ironic about Mr. Atkins' statement that "We don't want this thing blown out of proportion" given that bomb threats were made which could have literally blown things up.
3. Steve's motivations for speaking with Haroon were to get on camera, because he knows Haroon's friend Julian, and maybe to appear like a good guy by being friends with a Muslim kid.