Friday on MSNBC’s “Andrea Mitchell Reports,” former Republican presidential candidate and Donald Trump supporter Dr. Ben Carson said criticized the rules of how the GOP nominates its presidential nominee.

The retired neurosurgeon said he wasn’t directly comparing the Republican nominating rules to Jim Crow laws, however he insisted that bad ideas can be solidified in written arbitrary rules.

Carson said, “Well, I’m not so sure it’s about Donald Trump or Reince Priebus but it’s truly about the American people and whether or not they’re being disenfranchised by people who create arbitrary rules that tend to benefit them. This happens on both sides and I think it’s one of the things that the American people are tired of. I think that’s why we’re seeing people like Trump and Bernie Sanders doing so well because people are tired of the status quo. This is how it’s supposed to be with a few people sitting there and making those decisions.”

He added, “During the Jim Crow era, those were the rules too. They were written everybody knew about them. Didn’t make them right. And I’m not saying this is the same. But, you know, I think you get the point. just because rules are there, just because they’re written by somebody doesn’t mean that they’re right. It doesn’t mean you can’t review the system. There’s some things we need to look at from a historical perspective. Why do we need the electoral college anymore? Stop and ask yourself, why was that put in place and do some same circumstances apply? Actually, they do not. We need to look at a lot of different things.”

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