We should minimise human pollution of land, atmosphere and oceans.
But that has nothing to do with carbon dioxide from modern coal-burning power stations. No rational person could define carbon dioxide as “pollution”. It is a harmless, non-toxic, colourless natural gas that is the essential food for all plants which then produce food and oxygen for all animals.
Almost everything in coal was derived from plant material - burning it is no more dangerous than burning wood. Both will suffocate you in confined places, but when dispersed in the vast atmosphere their emissions are beneficial plant fertilisers.
Modern coal-fired power generators have extensive filtration equipment which ensures that the exhaust gases are harmless natural gases already present in the atmosphere – nitrogen, water vapour and carbon dioxide – all essential to sustaining life on Earth.