Why Nigel Farage is accused of playing politics over Henry Nowak's murder

Is the murder of 18-year-old Henry Nowak a new low for the police - or an excuse for political point scoring?Henry was handcuffed as he lay dying after being stabbed, having been falsely accused of racially abusing his Sikh killer, Vickrum Digwa.Reform UK leader Nigel Farage claims this is yet another example of 'two-tier policing', where white people are treated differently to ethnic minorities.Are those allegations justified? Do police forces in England have an institutional problem with race? Or are the facts and statistics being ignored to suit a political agenda?Niall Paterson is joined by Clifford Stott, professor of policing research at the Open University.Have you got a question for Niall? Email the show - why@sky.uk