Unjust penalty for what? Filmmaking?
All convicts either didn't do it or got a way harsher punishment than they deserved.
It seems an analogy is in order. If you fucked the over protective police chief's daughter only to be arrested for throwing a cigarette butt out of your car window 2 days later, you might suspect you were arrested for fucking the daughter and not throwing away a cigarette butt. You certainly committed a crime by littering but not 1 that warrants jail time
In other words, he thinks they will comb through his history to find the slightest infraction to imprison him in order to shut him up.
Now as the simple minded Mr turbo pointed out, I also agree he is just creating a buildup for his movie