I feel like someone innoncet going to jail is somehwat worse.
If somebody guilty walks free, i'm sure their case would be seen by many. Most people would know if the justice system's being useless as fuck(which is basically all the time). I can use an example from the UK. A boy called Stephen Lawrence was murdered in a racially motivated attack. Everyone basically knew the boys who killed him were guilty even if the justice system declared them as innocent. They walked free many times but karma played its role, and after some rule changes, revolving around the number of times people can be trailed in court, the boys were finally convicted criminals. However, if someone innocent is sent to jail they're life is done for. No matter what, if you are deemed guilty you're basically done for. It is far more difficult to prove ones innocence than guilt.