To compare this situation to Shangai in 1900 is ludicrous. In doing so Costa also ignores the fact that the 1998 UN policy called for a world free of drugs by 2008. It hasn't happened. Drug use is down in some places, up in others. Prohibitionist Sweden, showcase of the conservatives, has the same addiction rate as liberal Norway. Some drugs are declining worldwide but others are rising in popularity.
What sort of a world would it be? A very ugly one I think, full of soldiers, guns, prisons and poison on a massive scale.
And all to 'prevent' something which for the vast, vast majority of drug users is not even a significant problem.
I note Costa has not answered the question posed to him by the dare to act email campaign: If "legalisation" will lead more people to take drugs, why does prohibitionist San Francisco have three times the cannabis usage rate of liberal Amsterdam? Costa has repeatedly, publicly evaded that one. See the footage of it via the link!