In Lisbon when heretics were publicly burnt, it sometimes happened that one of them, by a particularly edifying recantation, would be granted the boon of being strangled before being put into the flames. This would make the spectators so furious that the authorities had great difficulty in preventing them from lynching the penitent and burning him on their own account. The spectacle of the writhing torments of the victims was, in fact, one of the principal pleasures to which the populace looked forward to enliven a somewhat drab existence. I cannot doubt that this pleasure greatly contributed to the general belief that the burning of heretics was a righteous act.
Source: Bertrand Russell: Ideas That Have Harmed Mankind，1946.
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