It's just that to quote statistics does not tell the whole story, as you well know. Any reasonable, intelligent, fair-minded person would want to know why certain statistics are as they are. If certain races are not more genetically predisposed to criminality than others (and I'd suggest that anyone who doesn't dismiss that notion immediately are themselves part of the institutional racism of our society) then we have to ask - what IS it that creates that statistic?
What do you think is in play that results in the "fact" that you stated?