one particular ethic group, as if they are the only ones doing it.
It may look wrong to you in US, but this uniquely horrible crime in UK does appear to mainly involve one ethnic group.
Here is a BBC report on the latest case currently being tried.
http://www.bbc.co.uk/news/uk-england-oxfordshire-21059681

Here is some historical perspective.
http://journalisted.com/andrew-norfolk?allarticles=yes