Ecstasy is really not a very dangerous drug.

https://www.theguardian.com/commentisfree/2015/dec/08/is-ecs...

http://www.telegraph.co.uk/news/uknews/law-and-order/4537874...

David Nutt has spoken widely and very entertainingly about drugs and their relative harms. This is an excellent lecture he has done a number of places on politics and drug policy:

https://www.youtube.com/watch?v=gkcO_wJ9yKo&spfreload=10

Nutt also founded the Independent Scientific Committee on Drugs:

http://www.drugscience.org.uk

This is a very good source for accurate information about drug risks and harm reduction.