So why do I think that those with extensive resources (i.e. those that are very "rich") are dangerous? They are able to do several things that others cannot including the following:
- They can build and maintain a network of thugs to do their bidding;
- They can provide substantial bribes to law enforcement and key witnesses to find them not guilty;
- They can hire excellent defense attorneys to eloquently argue their case and find every legal loophole; and
- They can affect the political system, for example getting pardons for their crimes, using their resources.
Even the non-rich can do some of these things to some extent, but there's no doubt in my mind that with greater resources the richer someone is, the better able he is to do those sorts of things.
That's not to say that I think that every or even many rich folk have bands of roving thugs going around murdering people or performing otherwise heinous crimes. I'm only claiming that they can do such things and that makes them relatively dangerous. Just like using fire is dangerous but people rarely get burned by it even though they do occasionally.
So reducing inequality, even it if created even more people with little or nothing left to lose, might reduce the number of dangerous rich people.