Left-wing politics supports social equality and egalitarianism, often in opposition to social hierarchy. It typically involves a concern for those in society whom its adherents perceive as disadvantaged relative to others (prioritarianism) as well as a belief that there are unjustified inequalities that need to be reduced or abolished (by advocating for social justice). The term left-wing can also refer to "the radical, reforming, or socialist section of a political party or system".