Imperator, the problem isn't the top 1% or top 10%, in my opinion they're not the big problem. The problem is the top 0.1%, or even 0.01% as well as corporations. They dodge their taxes and are currently the ones responsible for a "cash problem" the gvt has.
These are harder to find statistics for, so I'm just going to do some extrapolation if that's okay with you.
464,682*3.19 Million = 1.48 Trillion
^that's the income of the top 1%
Even if we're being generous and assume that 50% of the income of the top 1% is concentrated in the top 0.1%, This still only comes out to about 740 billion dollars a year in income.
Even if bernie can get 100% of this money, which let's face it isn't gonna happen while these people are alive, but let's assume he has them assassinated and replaces them with government wannabes who are willing to hand over all the money. This is only 7.4 trillion dollars over ten years, which not to be rude or anything, leaves a 25 Trillion dollar hole in bernies plan.
EDIT: Forgot about the income tax that we currently get, 2 Trillion dollars. This brings the hole all the way down to 23 trillion dollars!
Edited 5/14/2016 23:19:51