[WS:] two words: "party discipline" which means internalization of the belief that (i) "I" is not omniscient and thus fundamentally incapable of making decisions on its own, (ii) organizational wisdom is superior to individual wisdom, and (iii) loyalty to the organization/collective trumps individual opinions and feelings. In other words - you do not cross that picket line no matter how much you want buy an I-product. The unionists score much higher than anarchists on that measure.
If you do not like the "party discipline" phrase, think "social solidarity."
-- Wojtek
"An anarchist is a neoliberal without money."