Leftist

In politics, left-wing describes an outlook or specific position that accepts or supports social equality. They usually involve a concern for those in society who are disadvantaged relative to others and an assumption that there are unjustified inequalities (which right-wing politics views as natural or traditional) that should be reduced or abolished.
The spectrum of left-wing politics ranges from centre-left to far left (or ultra-left). The term centre left describes a position within the political mainstream. The terms far left and ultra-left refer to positions that are more radical. The centre-left includes social democrats, social liberals, progressives and also some democratic socialists and greens (in particular the eco-socialists). Centre-left supporters accept market allocation of resources in a mixed economy with a significant public sector and a thriving private sector. Centre-left policies tend to favour limited state intervention in matters pertaining to the public interest.