https://www.bbc.com/news/world-48444874
https://www.theguardian.com/environment/2021/dec/31/waste-co...
It's like how child labor ends up in supply chains - at the very least once you know it's happening you bear responsibility for making sure it no longer does, or if you can't do that, you stop doing business with the wrongdoer
[1] https://resource-recycling.com/recycling/2023/02/21/u-s-fibe...
[2] https://www.npr.org/2022/10/24/1131131088/recycling-plastic-...
[3] https://web.archive.org/web/20210120215100/https://napcor.co...
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6466021/
[5] https://www.google.com/search?q=why+do+people+litter
(fun fact: The origin of "Don't Mess With Texas" is from their anti littering campaign)