Weren't the Vanmarsenilles innocent?

I think the mechanic that Jacky beat up the worst of the two, implicated Jacky as revenge for the overkill beatdown he received over the tires.

When in doubt, arrest them all. After all there was a cop killing involved.

yes, the raid was on misinformation, but lucia fingered him for the assault, and told him so.

jacky knew he was done.