I do not know about your countries / places, but Lanzarote is unfortunately extremely littered by cans, plastics, and other waste. There is little to no consideration nor education regarding our environment. Recycling has begun a bit late, but we are getting there.
From another thread here, I've encountered this term -plogging- to go for a walk and collect rubbish. I've started doing it quite often to clean at least my most immediate surroundings. The results are great, but I still get angry when I see cans the very next day, particularly when I see a pattern: meaning the same person just doing it again and again. In this case, it is a red Dorada beer can (squashed in a particular way and then thrown), a wine bottle (same brand, always thrown at the same places, same route) and dog poop in a plastic bag (with a particular knot and always left on the ground or next to the plants).
I realised how quickly my mind starts snapping: Look! Again! Sons of bitches! How can they do this? In Spanish it sounds a lot angrier and better I have to say: ¡Otra vez estos hijos de puta! ¡Serán subnormales! Suddenly, I realised how I was littering my mind, just like they are...
No point in complaining about them. I want this parcel to be clean for hedgehogs to roam, cats to rest, and humans to enjoy their walks across.
Small acts of kindness as How mentioned can be powerful. These also count when we are kind to our mind and not pollute it with these thoughts.
Just a bit of eco-buddhist engagement!