[glomph]

Historically yes it is a massive part of what unions have done and continue to do. For example there have been many examples of dock workers refusing to transport South African or Israeli goods. That this is done as a collective action organised by union is what protects workers from individual retaliation.

[sanderjd]

Ok, that makes sense, but are there examples of individual action, where the union then protects that individual from the consequences of that action?