[johnzim]

Absolutely. I think litter is entirely a cultural/social issue.

It might be a little trite but I sometimes think the Eastern approach of Shame is more effective than the Western approach of Guilt in curbing small social transgressions.

[IfOnlyYouKnew]

Shame and guilt are really two sides of the same medal, aren't they? As in: guilt is evolutionary internalised avoidance of shame.

And, yes, it's an extremely strong mechanism. Most emotions are basically evolutionary implementations of government: shame -> criminal law, pity -> social safety net, etc.

Shaming is getting a bad rep these days, but it's essentially the least invasive method a society has to enforce common standards of decency.

[turtlecloud]

Correct. A trip to India def was eye opening in regards to the litter culture over there.