Already 20 pieces of junk on the ground, whatever, one more is 5% of the total.
Nothing there, My thing would be 100% of the junk on the ground, can't do that.
https://en.wikipedia.org/wiki/Broken_windows_theory
> In criminology, the broken windows theory states that visible signs of crime, anti-social behavior and civil disorder create an urban environment that encourages further crime and disorder, including serious crimes.
The same probably applies to things like littering as well, somewhat.
That said, it’s hard to imagine that excess litter collection could lead to minorities getting bashed by the police.
I'm not trying to argue against the premise above that seeing litter makes people more likely to litter; in fact, I agree with it. Humans are monkey-see monkey-do creatures. The problem is that "monkey sees broken window, monkey does murder" is not how this works. It's a weirdly authoritarian way of thinking that suggests that criminality is not only objective, but a tidy spectrum.