In 1895, a case called Coffin versus the United States came before the Supreme Court.

It was a complicated case, alleging more or less that three men had aided and abetted

a fourth in committing bank fraud.

The most important thing that came out of that case?

The idea that a person is to be considered innocent until proven guilty.

Here's how the court explained it.

The principle that there is a presumption of innocence in favor of the accused is the

undoubted law, axiomatic and elementary, the court wrote, and its enforcement lies

at the foundation of the administration of our criminal law.

The presumption of innocence is fundamental, embedded in a guarantee of due process laid

out in the Constitution.

But there's a flip side to this idea of innocence until proven guilty.

It's that once you've been found guilty of a crime, it is really hard to prove your

innocence, even when you are.

I think one of the biggest myths about the criminal justice system and the way it functions

is that most of the time we get it right, but in the slim chance we get it wrong, we'll

be able to correct it down the road.

And that's just not true on any level whatsoever.

That's Jessica Sino.

She's a lawyer and a dean at the law school at Georgia State, and Devani Inamin's tireless

and most determined advocate.

So the system, once you're convicted, is, I won't call it rigged, but once you're

...