Thankfully, at least someone on the planet tried to rank the relative harms of drugs. He was, of course, not a politician, and the nearest politicians fired him from his scientific-governmental posting.

David Nutt published his rankings here: http://www.economist.com/blogs/dailychart/2010/11/drugs_caus...

Alcohol, heroin and crack cocaine topped the list, in that order.

Ecstasy was near the bottom of the list.