In recent years, Thomas Piketty has reflected on the main pol ethical issues affecting the m. Convinced that 'inequality is not a esti economic or technological issue: it is an esti or ideological and pol tica issue', idea the backbone of his thought, Piketty proposes an alternative for the twenty-first century that involves refounding socialism, formulating a new form of socialism: a participatory, decentralised, federal and democratic, environmentalist, mestizo and feminist socialism.