Identity- and pride-based mass-media anti-litter campaigns

Mechanism

Instead of telling people littering harms the environment (a weak, easily-ignored message), tie not littering to an identity the target audience already holds — civic or regional pride, group belonging, self-image. Research on the most-likely litterers (often young men) finds they litter not from malice but because they do not see their action as a problem; reframing it as "people like us don't do this" changes behaviour where information does not.

Where it fits

A cross-cutting, population-level lever that works across every litter stream and setting. Most effective when audience research identifies who litters most and what they value, and when the campaign sustains presence over years rather than a single burst.

Operating profile and limits

Requires creative and media investment and long-term commitment; the effect is cultural and gradual; it works best paired with convenient infrastructure and visible norms so the desired behaviour is also easy. Heavy-handed, authoritarian messaging can backfire by provoking reactance, so tone matters.