From an interview with Bob Geldof:-
............................................................................................................................................
"I wrote it in Atlanta about 20 minutes after I was doing a college interview and they were playing tracks and the telex machine was coming through with the news and I was just reading it, as the machine disgorged this stuff. And it said that this shooting was underway in California, this girl was in her house overlooking the playground of her school, shooting people. This journalist had called her in the house, in the room where she was and asked her, firstly, was there any particular person she was shooting and she said, "No." And he said, "Well how are you choosing who to shoot?"

She said, "I don't really like the people in the blue jackets, so I'm shooting them first." Then he said, "Well why are you doing it?" She paused momentarily and replied, "Because I don't like Mondays."