"murder of a disabled refugee by a vigilante who wrongly believed he was a paedophile"
I had the impression from reading reports at the time and it seems to be borne out by more recent reports that accusing him of being a paedophile was just an escalation of the victimisation he had received because of his race and disability. Not because the killer actually believed he was a paedophile but an excuse for the killer to maximise the victimisation, and possibly an excuse he thought would help his defence as a sign of well-intentioned public-spiritedness. So I don't understand why ITV is giving the killer the benefit of the doubt by calling him a vigilante and claiming that he wrongly believed the victim was a paedophile.
A couple of BBC reports
Bijan Ebrahimi: Police 'failed' murdered man for years
Bristol police officers jailed over 'vigilante' death (I think the BBC was right to put vigilante in quotation marks)
Panorama did a report on racism in Bristol just four years before this murder. It's still available, in three parts, on YouTube under the title "Racism in multicultural Britain".
BBC reporters highlight racism on Bristol estate
The police behaviour in this case seems to have been abominable. I wonder if they really are now taking racism and/or disability victimisation in Bristol more seriously than they clearly did not in this case.