> But a serious issue has emerged during the course of this thread, of people running up campaigns to 'do something about it'.   

Not everyone who expresses an opinion has any intention of "doing anything" further. (I don't, for one.) But we have the right to free speech and free thought. There are some valid questions which have been asked and never answered, and it is fair to raise them - please don't confuse that with activism, or distort things by blanket accusations.