Environmental justice is the fair treatment and meaningful involvement of all people, regardless of their caste, place of origin, income or class with respect to the development, implementation and enforcement of environmental laws, regulations and policies. It is necessary as some people(mostly from low income, living in and semi-urban areas) suffer from environmental pollution and problems on a greater level, than as compared to others ( people from a high income group living in urban areas).
In India people can approach to the National Green Tribunal, courts in cases of environmental injustice. Also it is our collective responsibility to ensure environmental justice.
Quite often, governmental agencies in India and international funding agencies such as the World Bank are primarily responsible for railroading through projects that cause extreme environmental damage and social injustice. India currently faces multiple environmental and social crises that have directly resulted from the unjust political and economic systems that operate in the country. Environmental regulations are brazenly flouted or manipulated by corporations across the country all the time, often in connivance with corrupt regulatory officials and political leaders. There are a number of cases in India where power plant and development projects have and continue to adversely affect the local population
More often or not these companies provide funds to political parties across the spectrum, hence our political leadership plays a major role in providing environmental justice. You should often question the political parties about their environmental policies and consider environmental justice as a major issue when you cast your vote.