The GMP know that it is easier to get a conviction based on gang membership that it is to get a race hate crime conviction

That is shite Dave. To get a conviction they have to prove that the accused did it, not his motivation.
Gang membership is not even a crime.

Joint enterprise requires them to be present and involved during the murder. Gang membership is irrelevant.

And, yes, I could name a number of people who know that there are racist components in gang crimes but as they are serving police officers I will not do so.

Bollocks. They would leak it to the media if that was true.

Your whole case is that GMP is lying and the DPP and the whole media have failed to notice!
You lose.