I know it's fashionable to blame capitalism for everything which is wrong with the world but it's the people and governments who don't care about the pollution and think that's it's fine to throw garbage on the ground or in the river instead of disposing it properly. The Soviet Union did a fair amount of damage to the environment, despite not being a capitalist country.

Update: a small grammar fix.

Soviet Union did a fair amount of damage to the environment being a capitalist country.