Organic Cotton - Moral Fibre Part

"This is a documentary film about organic cotton production in Benin, the health effect of pesticides used in conventional cotton, and the power of consumers. With interviews from Beninese farmers, designer Katharine Hamnett, toxicologists and local doctors." (PAN)

What is kind of troubling is, that two important reasons for why the Benin farmers are suffering are not seperated but are in a strange and fuzzy way combined.

One: That the US subsidizes their cotton production
Second: Pesticides...

So after seeing that 14-min long film, I'm wondering what to do. Because the film also doesn't tell me why the Benin farmers at the first place started to use this toxics...

or to say it the other way around: If their would be fair trade (that means the US would quit subsidizing their cotton) the Benin farmers could sell more of their products and can afford adequate Toxic-Protection-cloth... but this way out seems to dont fit in the "moral cotton thinking"...