I think the biggest problem is the modern 'general publics' disassociation from animals and livestock and an apparent lack of common sense, irrespective of wether or not they are rich and or city dwellers. In the past there have always been walkers/ hikers or whatever you call them, in somewhat limited numbers, most used to keep to what was called the 'country code', i.e. leave all gates as you found them, don't deviate from the legal footpath, don't interfere with, feed or approach livestock, don't leave any litter, keep dogs on leads etc., etc.
However, todays 'freedom to roamers' are a different bunch, seemingly mostly bereft of common sense, self preservation and lacking in true knowledge of the farming business, countryside courtesies and the behaviour of livestock. This is why there are tragedies every year, both for the farmer losing his sheep to dog attacks, cattle being injured or poisoned by litter, gates left open or damaged etc., and the public suffering injuries or death. The vaunted 'freedom to roam' act without a very concerted public education programme I feel is responsible, the few public TV offerings have had little effect. I have absolutely nothing against anyone enjoying the countryside responsibly, indeed it is a good thing and healthy exercise and perhaps helps to educate people that is where their food originates from by dint of the hard work of the farmers and those chops, steaks and chickens are not born in a plastic bag in the supermarket!