When the source is viewed negatively because of its association with another person or group who is already viewed negatively.
Examples:
- Delores is a big supporter for equal pay for equal work. This is the same policy that all those extreme feminist groups support. Extremists like Delores should not be taken seriously—at least politically.
Synonyms: association fallacy, bad company fallacy, company that you keep fallacy, they’re not like us fallacy, transfer fallacy