its the "otherwise"s, that you (and the other person... lacny?) mention in passing, that's crucial to this discussion, isn't it? your "otherwise" includes "fascism". mine may include racism. how about sexism?
is personal reasoning and action equivalent to "second guessing"? shouldn't our support for another person or group be based on valid moral reasoning? surely something as high-level as solidarity with a particular worker group cannot be morally axiomatic?
what makes the rule "don't cross a picket line" an axiom of solidarity rather than a piece of rigid absolutism?
--ravi