Arrest ads are more often called up for "black" names

"black-identifying names turned out to be much more likely than white-identifying names to generate ads that including the word 'arrest' (60 per cent versus 48 per cent).  All came from www.instantcheckmate.com.

"She says the results are statistically significant with a less than 0.1 per cent chance that they were generated by chance." [Read more]