Well, if you're actually not upper middle class and at the top of the bracket then I'm wondering how you came to the conclusion a more regressive tax graduation

Well, if you're actually not upper middle class and at the top of the bracket then I'm wondering how you came to the conclusion a more regressive tax graduation would help more regular people, rather than a more progressive scheme and closing tax avoidance loop holes like you seem to describe as the problem. That being said, it sounds like you're the upper "middle class" everyone here is describing since it's really the very rich that have the option to pay themselves in things like dividends in most countries (though this may be a miscommunication). 55% isn't bad most places outside of the US actually, where do you live precisely?