Activism
Dummett was politically active, through his work as a campaigner against racism. He let his philosophical career stall in order to influence civil rights for minorities during what he saw as a crucial period of reform in the late 1960s. He also has worked on the theory of voting, which led to his introduction of the Quota Borda system.
Dummett drew heavily on his work in this area in writing his book On Immigration and Refugees, an account of what justice demands of states in relationship to movement between states. Dummett in that book argues that the vast majority of opposition to immigration is founded in racism and says that this has especially been so in the UK.
He has written of his shock on finding anti-Semitic and fascist opinions in the diaries of Frege, to whose work he had devoted such a high proportion of his professional career.
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