Prejudicial

Prejudicial is an adjective which means causing or tending to cause harm, especially to a legal case. It can also be used to describe a person showing prejudice to an idea, person or group of people. It can describe something which is potentially dangerous, disadvantageous or counterproductive or in extreme cases an action or actions constituting treason.

Teenage spite monkeys are prejudicial to useful information being published on Urban Dictionary
Those arseholes in charge of Twitter tipping off terrorists that they are being investigated is prejudicial to the safety of the civilised world.

prejudicialism

Same as prejudice. To show dislike towards someone or some people based on their background or situation.

"Why do they always have to show tramps on TV as Scottish people? That's just prejudicialism!"

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