Oops - hit "Submit reply" instead of "Preview post" and then took too long to tag this bit on the end:
The police initially will have had reason to believe the "have a go hero" used excess force, and that's why he was treated as a crim. Whether that turns into a prosecution is for the CPS to decide, based on whether they can secure evidence and whether they too believe the force was excessive.
Simply grappling the guy to the ground is, in my opinion, reasonable force. If the kid was already subdued but the "businessman" started or continued to put the boot in, that's assault.
I know from personal experience that The Daily Mail doesn't let the facts get in the way of a good story. My wife won a competition with a recipe of mine from when I lived alone. The DM covered the story and were quite blatant that it was not "interesting enough" to publish, so they would make a little twist here and there so it turned into me meeting her and falling in love because of her cooking.
Still - I should be thankful. They could have turned it into "Wife Steals Husband's Intellectual Property Shock" - and it would have been marginally closer to the truth.
