Black and White... ...Shades of Grey
I'm afraid, Peter2, that the 'ideal world' you mention exists only in your head, the rest of us have to make do with reality. One very sad reality is that sometimes the law is an ass! The only way to change this is to 'take matters into your own hands'. Whether it's to walk in front of the kings horse, or sit at the front of the bus, or even set yourself on fire. Someone must act before there is change.
While I agree (obviously) that rules are necessary for society to function, slavish obedience is bad.
Remember: "I was following orders" is not a defence. And the classic "who watches the watchmen".