As with vegetarianism there is a continuum in definition. For some "chemical-free" space means any substance that alters the "natural" mind or body. That can include drugs, alcohol, coffee, teas, sugars, and chocolate, it can also mean "prescription" drugs such as psychotropics and anti-biotics.
The only drug given exception in some definitions is insulin. We are primarily focusing on drugs and alcohol for the overall gathering as this is much simpler to define and more realistic for our community and abilities. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.