We often malign the police, but it's worth mentioning the good side too. My elderly father was recently conned out of a fairly small amount of money by a dodgy "tradesman". No big deal, but the neighbour reported it to the police, who did visit, took details, and gave my dad leaflets and advice, to reduce the risk in future (chain on the door, never agree to anything from strangers and other common sense stuff). Fair play, this was a very minor loss, which he and I might have dismissed as "put it down to experience", but the police did see targeting a somewhat vulnerably old gentlemen as something they'd take an interest in. OK they'll not get the guy for this as a one off, but as part of a pattern, he'll likely get lifted eventually
I'd see racially agravated threats and abuse described above as rather more serious, so again, he may well get off this time, but his name will come up once too often and he'll be in the shoot.