Yes. It reduces the company's bottom line until they either inflict bad publicity on themselves, sit and cope with it silently, or submit to the demand to pay their lawful taxes.
>I think a more effective form of activism would be to flood representatives' offices with requests to change tax laws and to vote for candidates willing to do so.
You're getting downvoted because we've got a lot of Americans on HN. For us, that approach failed as of last night.