Liberalism is a political doctrine that views protecting individual freedom as the central goal of politics. While government is necessary to protect individuals from harm, it can also threaten liberty. Liberals seek to limit government power over individuals while holding it accountable through democratic elections. They employ separation of powers and periodic elections to check the power of political majorities. Additionally, liberals recognize individual rights like free expression, privacy, and protection from arbitrary punishment that exist outside of one's role as a citizen. These rights are meant to preserve a sphere of personal freedom and limit government overreach, even by democratic majorities.