Surely to be legally protected a strike has to be about genuine workplace issues, and has nothing to do with conscience? That is drawing unnecessarily emotional language into workplace disputes, which can only lead to estrangement of workers from their colleagues, and ongoing ill-feeling.

If highly-paid people want to “support the cause” it is not only their business, but also the business of their employer, and of their employers’ shareholders. There are levels of responsibility here, far beyond a personal choice.