The general public? We are the general public and there are probably more people on this thread that agree that the guy got what was coming to him. Do you think that if it was your mate or girlfriend that got attacked by him, you'd have said to the police 'hold on, I think it's a bit unfair you giving him another electric shock'.
It's minor situation in my eyes. I'd worry about what's going on with North Korea's nuclear arsenal, not whether some scum bag got another tagging when he was being aggressive and offensive....and has been prolific in that. Sorry, I just don't see it as being a major issue. The guy was in the wrong, big deal he got another tasering. It's designed to immobilise which is what it did. The first shot obviously didn't do the job, so a second shot was needed. Seemed to work. Job done.
The media only think it's an issue because for them, it's a story.