Environmental racism is a form of institutional racism leading to disposal of hazardous waste being disproportionally placed in communities of colour. It also results in indigenous people disproportionately bearing the environmental burdens of mining, and oil or gas extraction. In Russia, there are 47 officially recognized indigenous groups, who have had some rights to consultation and participation under Russian law since 1999. However, these guarantees have steadily eroded with the re-centralization of state control, and several indigenous autonomous territories have been abolished.