John Christman 
Social and Political Philosophy [PDF ebook] 
A Contemporary Introduction

This accessible and user-friendly text will prove invaluable to any student coming to social and political philosophy for the first time. It provides a broad survey of fundamental social and political questions in modern society, as well as clear, accessible discussions of the philosophical issues central to political thought.Topics covered include: the foundations of political authority, the nature and grounds of economic justice, the limits of tolerance, considerations of community, race, gender, and culture in questions of justice, and radical critiques of current political theories.