One of the most interesting campaings around Rio+20 has the goal of ending fossil fuel subsidies, as explained in Huffintongpost. It can be supported in this web . I supported it convinced of the opportunity and ethic value of this message even if I do not know very well its origin but supported by the signature of many NGOs.
Some data are really impressive, for example from climate progress one of those cases involving $29.000 million in carbon from public lands is denunced. Current miners strike in Spain due to a reduction of carbon subsidies is another example, although the difficult social contest in this case would require a different treatment like deviating this great amount of money to production of new sources of energy as a job source for the miners. As shown in the picture renewables are not the only ones subsidized now, and if the historical data are considered the balance goes even more to the fossil fuel side because energy has always been a state issue. This would be a question of fair bussiness in another contest, though not with climate change calling to our doors.
It is really stupid to hinder renewables expansion due to the costs whereas current mature technologies that are driving our climate mad get huge amounts of money. I really think that renewables are more expensive and that we will need sacrifice to cope with climate change; but, at least, we have to start with some minmum requirements like not subsidizing the source of the problem. This way it will be easier to measure the costs.