One really easy, powerful way to help is by writing your congress-person and letting them know that the fumigation of coca farms in Colombia is not destroying the supply or production of cocaine. In fact, it is actually destroying food crops along with the coca, driving farmers off their land. Farmers who do stay must choose between growing the readily available, easy to sell coca (which can be cultivated very quickly) or waiting several months and attempting to grow food crops again that may never be harvested.
Also, please do not purchase or ingest cocaine or cocaine byproducts. Write your congress-person and encourage them to stop funding for fumigations under Plan Colombia and make them promise to not purchase cocaine!
And this is a short article about the ACVC, a farmer advocacy goup that Give Us Names is working with.