Does anyone know what series this is and where we can find it?

H/T MissPiggy

Manchester mosque inspired arena bomber by calling for armed jihad

From this BBC article:

I would like to congratulate the BBC for this story. While it is still clinging to the narrative that this is not the real islam etc. ad-nuseum, it is amazingly factual and meaningful compared to any UK or major Western MSM production. The spin at the end was deflecting and one or two mandatory salutes to islam in the middle, but overall, this was amazing by the standards of a mostly fully deceiving far left wing extremist media in the West.