Simple past tense and past participle of demonise.(verb)
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Use "demonised" in a sentence
"His comment on losing his job was "life's not fair", adding that he had been "demonised" in the US and that BP had been a model corporate citizen in its handling of the disaster."
"A spate of deaths among heroin users whose drugs were contaminated with anthrax has highlighted how addicts are "demonised" and struggle to get treatment, according to experts."
"Its not the BNP who are being "demonised", but people who do not share those views, yet have no representation in the "legitimate" parties and, moreover, are tarred with the same "racist" brush for daring to question the elitist "multiculturalist" trope."