1) Modern notions of citizenship seek to establish free and equal citizens by disregarding ascribed inequalities like gender, caste, race, etc. Citizens are conceived as bearing rights and exercising them equally.
2) T.H. Marshall suggested citizenship evolved from civil rights to political rights like voting, and later to social rights through welfare states.
3) Max Weber argued that citizenship in modern states is institutionally thin, defined against class affiliations, and citizens are seen purely as members of a state rather than in terms of profession or family.