On a pro rata scale that takes into account demographics that is the case. If say we had 10 migrants from Chile and one was found to be a serial child abuser then the pro rata rate would 1 in 10 Chileans are convicted child abusers. Compared to the 1 in 1000 Pakistani muslims, 1 in 100000 Catholic priests and 1 in 1000000 Indigenous whites. Those are the figures taken from the convictions of child abusers of the last 4 years in the UK. Pretty damning at the end of the day for Pakistani muslims, and the cases are still being investigated by the police.
What you're saying is, the number of Pakistanis convicted has to be multiplied up before you get your 90%.
How about British entertainers as a percentage of the total population.
The incidence of DJs and other entertainment professionals in the UK is a tiny minority of the general population, but a hell of a lot have been convicted lately.
Perhaps we should multiply that number up and find out 99% of sex crimes against children are committed by TV personalities.
The 2001 UK Census recorded 107,871 Australian-born people, one committed and was convicted of 12 counts of rape.
The UK population is 63 million so we need to divide that by 107,871 to get the factor.
584.
There were 18,915 cases in 2012/3.
Rolf did 12, times 584 to get the pro rata figure makes 7,008.
Fuck a duck, Rolf Harris was guilty of about 40% of UK sex crimes.
That or your theory is a load of old bollocks.
If you have to resort to distorting numbers to make your point, you are probably wrong.