If this is really - REALLY - about checking and balancing governental greed, and NOT about feathering your nest, it shouldn't matter where the money that you gain goes to. You said this strike is about unfair labor practices, not about money. Prove that - by giving away any money you gain from this strike.

It shouldn't matter to you if you give your financial gains from this strike to the the riders who have had to pay out of pocket for your strike by calling cabs, skipping shifts and so on.

However, then again, the UTU may give some sort of high-profile, but actually insignificant donation to a poster-child charity so it can look like you aren't in it for the money.