guilt by association

1. The attribution of guilt to individuals because of the people or organizations with which they associate, rather than because of any crime that they have committed.

Example Sentences

But that cannot happen when private-sector workers experience guilt-by-association with unpopular public-sector union actions.

From The Daily Beast

Indeed, this form of shaming, blacklisting, and guilt-by-association is, itself, a form of defamation.

From The Daily Beast