In the U.S.A if you took EVERYTHING from all of the billionaires, there are ~700 of them you would net under $5T in total [1]. The existing debt of the USA today stands at a hair under $28T [2]. The estimated budget deficit for the next 10 years is $1.2T a year [1]! You do realize you can lop off all the heads you want, take all the money you want, and you will not have solved anything! You would still be a debt slave :( Raising taxes by itself will not solve anything you ALSO need to decrease spending, but no one wants to hear about fiscal responsibility.
The heads that need to go are those of corrupt politicians.
[1] https://inequality.org/great-divide/updates-billionaire-pand... [2] https://www.pgpf.org/national-debt-clock
The goal of threatening to kill someone isn't to murder them for the sake of murder, it's to negotiate with them from the fairly sensible starting point of "give me what you want or I'll kill you". If what they want is "fair wages and a decent life," that seems reasonable enough.
edit: Come to think of it. You cannot ignore it precisely, because it is not rational. Rational people you can bargain with.
Demographics-wise, I assume people younger than me, but I may be oversimplifying it. In practical sense, the more you earn, the less likely you are to support tax increase on yourself so maybe it is more tied to socio-economic status. Sadly, I have no data to back this up.
I agree with your point, but you will often find the plight of the poor is.. low on the priority list. It should be higher based on the average presence of guillotines on various message boards I frequent, but I assume the well-off have some sort of survival plan.