Unfortunately, this is a very poor example on which to base such an argument. Let me say, though, that I do not condone what happened, just the opposite.
However, this situation arose out of a documentary made by the BBC in Bristol which entailed two Asian reporters being deliberately found a house in what can only be described as an overwhelmingly white working class, run down council estate, where the average IQ is on a par with that of a goldfish, and unemployment is way above the national average.
The couple were equipped with secret cameras with which they filmed their comings and goings around the streets of the estate. The culprits were very few in number and were what can only be described as "typical yobs". They were not representative of the vast majority, some of whom in the film are seen coming to the aid of the Asian couple.
The strong impression given was that the documentary deliberately set out to trap and ensnare the pond life on that particular estate, and in that respect it did not disappoint. But it has to be put into perspective, the idiots who were responsible for the abuse are to be lambasted for their racist actions and behaviour, but were still in a very small minority.
Some cynical observers of that documentary may conclude that the BBC and their reporters got more or less what they expected, and otherwise they would not have had the kind of material for the programmed which they set out to achieve.
We live in a far from utopian society, and no decent person can condone racism, but I can only conclude that the BBC would not have achieved its aim had they sent two white reporters into that particular estate.