Pretty dark humour, in poor taste for most people... but nothing to do with plod.
Those complaining went out of their way to watch it and spread it... if Plod are involved these people (Piers, Abbot, May etc) should be investigated for promoting it and distributing it.
Five men are arrested over sickening Grenfell Tower bonfire | Daily Mail Online https://www.dailymail.co.uk/news/article-6357517/Five-men-arrested-sickening-Grenfell-Tower-bonfire.html