I put the blame everywhere, but ultimately the rich are a target because under a Bitcoin economy redistribution of their wealth will have to be the end goal in order to reward the productivity of the working man.
If the marketplace values the work of the "working man" then it will pay him accordingly. Stealing resources from people who have harmed nobody is not okay. If you think the working man deserves more, you are welcome to hire him - indeed if he is so much more productive than his wage indicates, then you should outbid the other employer.
The idea of "redistributing wealth" becomes even more silly when you realize that wealth is produced, not distributed in the first place. What a rich person has, he earned (unless he engaged in fraud or theft), and what someone earns, he deserves to keep.
Wealth is not a pie to be sliced up evenly. It is produced, and belongs to the producer exclusively.