Since 2007, the World Day of Social Justice has been celebrated by the United Nations. Social justice is an underlying principle for peaceful and prosperous coexistence within and among nations. We uphold the principles of social justice when we promote gender equality, or the rights of indigenous peoples and migrants. We advance social justice when we remove barriers that people face because of gender, age, race, ethnicity, religion, culture or disability. For the United Nations, the pursuit of social justice for all is at the core of our global mission to promote development and human dignity.