here in america it's often old wealthy hikers who think anyone who isn't hiking is 'destroying' the 'peace' of nature, and they deserve to be punished.

we just had a article in our local paper arguing mountain bikers are evil people who endanger the 'peaceful' good people who don't ride bikes. we have also had people lay traps on the trails every few years.

it's just messed up people who think their way is the only way, and everyone else who is different than them should be the victim of violence until they are 'corrected'.

There are Karearea nesting around there (I think they do it on the ground too!), so that might be it - presumably that'd be far away from where people are zipping past, though