What do you define as rich and poor? By world standards, virtually everyone on this forum is incredibly wealthy. Anyone who genuinely steals from the rich and gives to the poor would rob most of us blind and give it to developing nations.
Given how I like my things, I'd say that I would not support him. Besides, we live in a democracy. You think the poor should get more? Vote for politicians who agree!
"But Koroleve," you say, "The rich control the electoral process and the media!". Well, no, they don't really control it entirely. If they did, Obama would never have been elected. The vote in the US is still free and mostly (not entirely) fair. It's just that Americans for the most part have brought in to the two party system and a lot of Americans hate the poor.
You can claim that it's the media and all those political ads that warp the process - um... who listens to the ads? Who believes them? That's right, the people.
You have LEGAL and SAFE ways to redistribute wealth if that's what most Americans want. Most Americans do not want that. And no, attending your college rallies does not prove that most of America wants what you want - your college rallies are not representative of the US population! It's astonishing how many naive college students fail to realize that the political make up of the college campus does NOT reflect the political make up of the USA in its entirety. That is why you are often so shocked when politicians you like fail to get elected, despite everyone around YOU supporting them. Everyone around YOU is not EVERYONE. It's not a hard concept to grasp.
The US people have the means to make a fairer, nicer, richer nation. But most of them don't care enough to make it a reality. The US gets the government it deserves!
So where am I going with this tangent? Ah yes - a modern day robin hood would brake the law. The law is the will of the majority of the people. What's that you say! The law sucks! Well, then, guess who is to blame for THAT! There is no grand conspiracy keeping the US down, there is no mastermind plot behind why there are so many poor people in the US - simply put, the majority of the people in the US (much like the majority of people in EVERY NATION - that goes for China, UK, Germany, France, Japan, Australia, Iceland, Angola, Brazil etc), are selfish, shortsighted and easily fooled by big bright shiny ads.
You want redistribution of wealth? Convince your fellow citizens it is a good idea (and good luck with that). Don't go supporting a vigilante.