Let's face it, Steph. You and I both know that marches alone aren't going to cut it, that industrial and possibly societal action beyond marching is necessary, but we also know that certain workers, because of their specific work ethos or ethical code, will still provide their services during a strike. That doesn't, however (whatever Kizmet may believe to the contrary) mean that some members of that profession shouldn't take industrial action on behalf of their colleagues, "pinching" those services without closing them off completely.
Kizmet will complain that this will inevitably cost lives, but the truth is that it has never been proven (and G-d knows the Tories tried during their last reign to do so) that industrial action by emergency services caused greater loss of life than would have occurred if no industrial action had taken place.