If behaviour or beliefs, etc are repugnant,, they are very unpleasant, causing a feeling of disgust. (Cambridge Dictionary)
If you think that something is horrible and disgusting, you can say that it is repugnant. (Collins Dictionary)
Extremely distasteful; unacceptable. (Oxford Dictionaries)
Repugnant. Your Dictionary.
Repugnant to the Very Idea of Democracy?