The mainstream media is awash with stories of a hunt supporter who has died apparently while confronting a gyrocopter. Activists had been using the copter to monitor hunts and the hunt follower appears to have run on the runway while it was taxiing (moving along the ground) - a very dangerous thing to do. Yet police have arrested the activists concerned for "murder". http://www.timesonline.co.uk/tol/news/uk/crime/article5877904.ece
It's rather implausible that someone could murder someone with a gyrocopter even if they wanted to... on the other hand, running in front of a moving aircraft is not exactly smart!
(Notice on the other hand that nobody got charged over the death of Jill Phipps, in far more suspicious circumstances)