I'm furious because I see a non-stop behavior of consumers dumping their garbage, either in nature, or in municipal waste sites next to bins because they're too goddamned lazy to literally lift up their arms - let alone not sorting garbage for recycling.

And this is in a major city in middle Europe, one of the centers of "civilization".

If it's this bad here, what must it be like in countries with less developed social and economic systems?

This is the core of consumer responsibility, and it's a dismal failure.