I cannot find any where an account of what the 'offensive weapon' was, without knowing that and the circumstances to make any comment is just a wild guess, inspired by an eye catching headline, designed to sell papers. But I did read that he was arrested for possessing any offensive weapon.

If it turns out that guy was just about to cut someone's throat, or something similar, I guess your opinions might be different !

For example, there was also a report of an 89 year old who was tasered. Again that probably made a great headline but in that case he was about to cut his wrists, so the police probably saved his life.

Sorry if I spoiled the 'let's have a go at the police' game.