At least a setup where right to live is actual right to live and does not degrade to right to not get killed.
Does that mean that you also don't support kicking renters to the curb during winter months if they don't pay?
Charity has its place, I advocate and facilitate it, and am not under any delusion that it comes from compelling others to contribute.
There are a lot of people such as you that think that right to own things and do whatever you like with the things you own trumps pretty much every other right. Including the right not to get killed of the people who'd try to steal your stuff. Fortunately lawmakers in lots of first world countries got passed that barbaric notion. In my country for example you can't hurt the thief. You can try to hold him until the police comes, but if you beat the shit out of him or set a booby trap to harm him you will be prosecuted because you endangered his life and health, a value more important than your petty stuff. Same way you can smash the window of a car parked in the sun on a hot day if you see dog left inside. You are violating less important right to protect higher value.
Explain how this works logically. Do you honestly believe that if you simply took most of the money from rich people, that you would be able to sustainably feed everyone else? Have you considered all, if any, of the potential consequences of this action?
> For quite a long time now, the technical means have existed to provide the basics of life to every human being on the planet at a modest cost.
Again, explain how this works. A major issue with food, for example, is not one of production but instead transportation and distribution. How would making the rich poorer solve this problem?
> Institutionalized theft? How about economic and social justice?
Define justice.
And who on Earth do you trust to take and do well with all of the money taken from rich people?