Probably not. It's undoubtedly impossible to prove the assumptions of others, I was annoyed at the reduction of this awful story to the level of an interesting puzzle on the back of a match box that allowed me to type what you have rightly pointed out was a baseless (apart from the fracas) assumption. I'll change the words to --- 'that the initial assumption may have been along the line that the black'-----etc. And in mitigation of my lack of proof may I point out that there are whole belief systems are based on the totally unprovable.

It's still a no less appalling thing to happen.