They aren't powerful at all. There might have been mumblings at work, but people will find any reason to moan about promotions. If they can pin it to something about which they know nothing, they will do.
Freemasonry is about brotherly love, relief and truth. Those are three of the pillars. They SHOULD NOT defend anything morally wrong, that is what the square and compasses which forms the basis of their rituals is about. Morality is one of their corner stones, which is illustrated by one of their key symbols.
You cannot explain it in a few sentences though, it is a way of life. It is also one of the largest charitable organisations in the UK.
I thought it was bunkum 5 years ago. But now I live with a mason. He is a genuinely good man who has never sought nor received any financial benefit from his lodge. Nonetheless, in times of trouble, the brethren are there to support you. I recall phoning the master of his lodge in floods of tears when he was in a very bad place. Immediately, support was forthcoming from angles I could never have imagined.
It is an organisation of mutual support and one to which I lend my support - plus their Ladies Nights are generally jolly good!!!!!