I've researched this a bit now-it is the IPCC.
They say they didn't taser the guy with the sword because he responded to them promptly (probably because he could see them as opposed to the first guy who couldn't, you think?)
You're right-I think there must have been more than one visually challenged person involved in this incident-I'm currently surrounded by Samuru swords and I can tell you not one of them would pass for a blind person's stick.
So is the policeman claiming self-defence? Because this guy had a 'weapon'?
They're not just used as a guide-they're recognised as a symbol, the user is blind (or deaf and blind).
Rather large schoolboy error-wonder if he still had an 'L' plate on his home office helmet...

