U2 was involved in Live Aid, and I ended up going to Ethiopia and working there for some time with my wife, Ali.
Particularly conservative Christians, I was very angry that they were not involved more in the AIDS emergency.
It's annoying, but justice and equality are mates. Aren't they? Justice always wants to hang out with equality. And equality is a real pain.
As hard as it is, as ghetto as it is, hip-hop is pop music. It's the sound of music getting out of the ghetto, while rock is looking for a ghetto.
The idea that there is one kind of African is of course ridiculous. Sometimes African entrepreneurs want to kill you because you are saying public health is the priority, not roads. Of course they are right to press for that issue, but so are we right, I believe, to argue for example that millions of children could and should be vaccinated.
The great music for so many artists - the Beatles, the Rolling Stones - was always at the moment when they were closest to pop. It would be easy for U2 to go off and have a concept album, but I want us to stay in the pop fray.
The great moments of rock 'n' roll were never off in some corner of the music world, in a self-constructed ghetto.
So what we're talking about here is human rights. The right to live like a human. The right to live, period. And what we're facing in Africa is an unprecedented threat to human dignity and equality.
Let's not bequeath the pop charts to just children.
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