Other novelists, such as Leonardo Sciascia, sometimes called the conscience of Sicily, followed.

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Public Enemy - formed in 1982 by rappers Chuck D, Flavor Flav, Professor Griff and DJ Lord - is widely considered to have given a social conscience to early hip hop, with politically charged tracks such as Fight the Power.

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Ultimately, it wasn't Protestant conscience that eradicated slavery, but the ascendance of mass-production lines and innovations such as the steam engine.

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