thegecko - what Desolator is alluding to is that not everyone who has committed or is committing a crime(s) is currently in prison. Therefore the possibility exists for it to be the case that more white people commit crimes than black people, but more of the latter end up in prison (there's a good chance that this is the case anyway, because there are more white people in the UK than black people); if so then the reasons for this are another point of debate.