User blog comment:LuffyPirateKing/When The Sun Goes Down/@comment-4498721-20120115012210

Maybe Ace was sent to ID because he was one of WB commanders, but execution was clearly for being Roger's son.

Tom's case was basically the same too, they just get rid of anyone they can relate to Roger. When a gun used for crime, does that makes the guy sold that gun guilty? Or maybe the manufacturer of that gun in our case. Tom made the ship and how the ship is used was owners decision. Tom was proud of his work, the ship he made sailed to the end of GL, and probably he respected Roger for taking his ship to there. But it got complicated with the blueprints and they had to accuse him with something,. Lucky for them there was the ship, so they didn't even had to make up a story for his execution. Just like they made up a story for Robin's bounty.

Thats WG's way of doing things. "A kingdom with powerful weapons? Destroy them all and erase them from history!", "These people can read the Poneglyphs? Kill every last one of them!", "Blue prints of a weapon? We can't let anyone have 'em, threaten and kill people 'till we got them!", "He is the Pirate King's son? Kill him, and lots of other people in the proccess!". They don't know any better. They don't know how to deal with it, so they just destroy stuff.