The chief executive of the UK Medical Research Council stated that MDMA is "on the bottom of the scale of harm," and was rated to be of lesser concern than alcohol, tobacco, and cannabis, as well as several classes of prescription medications, when examining the harmfulness of twenty popular recreational drugs. The UK study placed great weight on the risk for acute physical harm, the propensity for physical and psychological dependency on the drug, and the negative familial and societal impacts of the drug. Based on these factors, the study placed MDMA at number 18 in the list.
It's worth checking the link on the above quote. Apparently 500,000 people take ecstasy every weekend in the UK. When this is taken into account, the moral panic that prohibitionists create about the drug falls into an evidence-based perspective. Let's get real, please, and leave Paul Baker to his own devices.