I don’t know where you live...
If you are saying voicing opposition to a law is itself illegal then I repeat what I said: he would have been a national hero for a hundred years.
And there is the small (to you, seemingly) matter of honor. These people were being oppressed for supporting Walker and Walker was honor-bound to find a way to help them. He didn’t even look.
You have to understand our law (if anyone does.) Thank goodness the legislature is in the process of changing it.
I didn’t understand it when I first moved here 30 years ago. As I said, it (and its penalty) is unique in the US. The prosecuters are still not abiding by the several court orders to return the confiscated materials to the victims.
When I first moved here, I knew a lady (who turned out to be a little crazy, may she RIP) who used to rant all the time about somebody in City government whom she didn’t like: “Get a John Doe after them.” I really didn’t know what she meant until now.