How can that be? What's wrong with the law that we can't touch him? Oh... I know. Our kind of laws are designed to protect the innocent. It's not enough that we know a man is guilty. We have to prove it.

19 seconds sound clip from the The Enforcer (1951) movie soundboard.

You can hear this line at 00:17:46.975 in the Blu-ray version of the movie.

Quote context

[...]

- It doesn't make any sense. A man commits murders, and there is nobody around to testify against him.

- I had somebody.

- All right, what's our legal position?

- Mendoza's lawyers will go to court tomorrow morning, ask for dismissal, and get it. Like that.

- There's nothing we can hold him on?

- I couldn't even give him 30 days.

- In 7 more hours, Mendoza walks out of that court room a free man.

- How can that be? What's wrong with the law that we can't touch him? Oh... I know. Our kind of laws are designed to protect the innocent. It's not enough that we know a man is guilty. We have to prove it.

- Ever have a tune run through your head, and you can't remember the words?

- What are you getting at?

- How many people did we speak to on this case?

- Oh... I'd hate to remember.

- How many pages of testimony do you suppose we took?

- Enough to fill a nice-sized room.

[...]