According to Human Rights Everywhere, there is widespread evidence of "forced displacement, assassinations, property invasion" as Colombia grows its palm-based biofuels industry.  Paramilitary forces are alleged to be taking land forcibly from subsistence-farming communities in order to turn it over to biodiesel producers, who convert it the land to palm plantations.  The UN has suspended its investment in Colombian biofuels, but so far Colombia has escaped the kind of international scrutiny that Brazil's ethanol production has undergone recently.