Having just watched the video, it fills in more detail than the article does. The police didn't announce they were there or that they were going to use the gun, no wonder he didn't stop.
With regards to "how does a blind guy know he's being spoken to", the chap is registered blind but appears to have partial vision which can be seen as he's talking to the reporter / camera, so that seems like a bit of an odd comment to make.
With regards to "how does a blind guy know he's being spoken to", the chap is registered blind but appears to have partial vision which can be seen as he's talking to the reporter / camera, so that seems like a bit of an odd comment to make.