Singapore already solved this problem: Execute all drug dealers.
Remarkably effective but at a tremendous cost to personal liberty.
https://en.m.wikipedia.org/wiki/List_of_countries_by_prevale...
Remarkably effective but at a tremendous cost to personal liberty.
https://en.m.wikipedia.org/wiki/List_of_countries_by_prevale...
Presuming Singapore correctly identifies the dealers, how is this a violation of liberty? You typically don't have the ability to harm others and drugs cause clear harm. It's not like laws against theft cost me personal liberty.