Orcs have an aversion to nature. Which unlike in films, means they can't stand darkness. Walking/running/cycling along paths when it's dark, they blast powerful LED lights around and in front of them, ruining the natural darkness for everyone. Sometimes you can see the lights for miles.
They also illuminate the outside of their houses, garages etc. with harsh, blaring LED light all night, every night.
They will not endure even relative darkness for five seconds, they will switch on their smartphone torch or an LED light.
They apparently can't stand for nature to just exist without being interfered with in some way. They constantly concrete over the countryside, however even when there's a designated 'nature area' they will spend massive amounts of time, energy and money interfering with it, planting such and such, removing such and such, adding fountains or whatever.
They litter. They like to roll down their car windows in national parks and throw non-biodegradeable litter from 100 miles away into the countryside. They throw litter on the floor six feet from a (non-full) bin. They put recyclable rubbish in the landfill bin and vice versa.
Of course they talk in the cinema/theatre and blast their phones in public places as well. The worst being public transport, as you're trapped in a small place with them.
