This whole situation reminds me of the fable of Sun Tzu and King He Lu's concubines. I've linked a copy of the story, better than my TlDr, but here it is anyway. TlDr; Sun Tzu was tasked with training the kings concubines as soldiers. He gave them instructions, and they refused to carry them out, laughing and not taking it seriously. He then had two of the Kings favourite concubines executed against his wishes. Suddenly they were taking it very seriously and doing the right thing.

It doesn't take much to control a populace. The arrest of Luigi will make people he might have targeted feel safe again. But if they didn't feel safe - ie he was never caught - he might have made real change and the targeted group would start doing the right thing for fear of retribution.

It would have been an interesting alternate timeline.