If you've ever been accused of even the smallest crime with the flimsiest of evidence, know that there are multiple salaries at stake once the handcuffs are on:
1. The police who arrested and charged you.
2. The prosecutor who decided to go ahead with the charges.
3. Your lawyer.
4. The judge (if it ever gets there)
5. Yours - you probably lost your job as soon as you were arrested anyway and good luck finding a new one with that on your record.
There is only one person on this list who even cares about your innocence. That's right, you.
Even your lawyer? S/he doesn't really care. For him/her, it's about getting the "best" deal. Because going in front of a judge is like flipping a coin and if you fit any stereotype, you are likely fucked.
Ever had a tax audit? Same idea. No one cares about fairness or justice in the government. They only care about their salary and performance.
The police are given more funding, the more arrests they make. The prosecutor has a full pipeline ensuring his/her job. The judge likely doesn't even need to see a single case in a week.
There is no way out. Talking about it doesn't help because anyone who takes a plea is assumed to be guilty: "Yeah he wasn't found guilty, but he must have done something otherwise why would he take a deal instead of go to trial?"
That is the way the layman thinks. If I was to tell you that I was arrested for walking in a room a police officer told me to walk into, you'd laugh and say I was lying. But it's true. And I had to plea out of it. Because it's my word against his. And I took a plea after he tried to steal $400 from me and burned my watch while I was in custody.
The government is a mechanism for satisfying bullies. Is it any wonder why small government is desired by some?