A crime is a crime even before a judge rules over it. Sure, innocent until proven guilty, but most people know when they're doing something wrong and then don't do it.
Of course, this is a lot more grey area for copyright violations etc because it's a civil matter.
[delayed]
What happened to innocent until proven guilty?
"Innocent until proven guilty" concerns whether someone did a crime, not whether something is a crime.
An action can clearly be a crime, but it might be unclear if you did that action.
[delayed]
Only our legal institutions and the frameworks they create can decide if any specific act is a crime.