We also don't want to seriously damage the capital. I was in it years ago and, although I'm loyal to my Iowa, I'll admit Madison does have a pretty capital building and a lot of nice other things in it that are worth protecting. And, although it has more than its share of rabid leftists, there are also plenty of nice folks there I'd rather not see caught in crossfire. It may take a fair amount of tough love, but most of the populace should salvageable, even in Madison. If that weren't so the left wouldn't need to be busing in extra thugs. The thugs are bullies and bullies can be cowards if faced down firmly enough. They may back down. If they don't they eventually need to be taught that the long standing double standard, under which union violence went un- or under-punished, is over. But first take time to let those, who can be backed down, bail and to sort out the loyalty of your 'own' police, etc.
Meanwhile the contrast between the protesters and Walker is moving public opinion Walker's way so he has no need to rush this. I haven't read much recently about the Wisconsin AG, but he's GOP and won re-election by a wide margin. If Walker needs to act he can hand the ball to the AG.
Good points, thanks. Hope it ends without physical harm...