Does this example also inspire you ?
http://www.telegraph.co.uk/news/ukn...-two-more-women-he-met-on-dating-website.html
You have cherry picked two extreme cases.
The largest rings of worldwide paedophiles are actually predominantly white. A large amount of my friends work in Social Services and in particular the Probation Service and their largest allocation of clients on their register for sex related crimes are actually white. To be honest, I am not really on about black or white because that doesn't matter. I don't even see colour when I address an individual siting opposite me.
My point is that we need immigration and the majority of them are an asset to the UK - Or their families will be once we invest in educating them in the same way we do for our own born UK children.