Image by Dr John2005 via Flickr
GUILT BY ASSOCIATION is a known Logic Fallacy in politics, etc.
Some syllogistic examples of guilt by association are:
Hitler was a vegetarian. Hitler was pure evil. Therefore, vegetarians have evil ideals.
Mr. Soros finances the ACLU, YOU finance the ACLU. Therefore, YOU are ( a supporter / lackey / lover of- ) Mr. Soros.
Image via Wikipedia
Greek Joke (expressing this fallacy):
Policemen are instruments, Buzukis are instruments. Therefore, Policemen are Buzukis. 🙂
someone or something must be reputable because of the people or organizations that are related to it or otherwise support it.
- Alice is a lawyer, and Alice thinks highly of Bob. Therefore, Bob must know the law.
- Aaron will make a good race car driver, because his friend is a good race car driver.
In notation of First-order logic, this type of fallacy can be expressed as
meaning: «if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true.»
- Premise: A particular thing A is a B
- Premise: A is also a C
- Conclusion: Therefore, all Bs are Cs
Source: Wikipedia, as well as many other sources (to be added later on)