Paul Soglin hates WMC, so very, very deeply.
(Graphic language in the video.)
You've got unsourced "facts" about the group's inner workings and a rather incredulous denial that a secondary boycott caused a WMC board member to resign. You've got calls for diclosure of the identity of those who contribute to WMC's issues campaigns. WMC is a player in state politics and is certainly a proper subject of discussion, but, as far as Paul is concerned, it is on.
Maybe I missed it, but inquiring minds want to know. Is Mayor Soglin receiving any support or renumeration from anyone for this? If he is, that's fine. There's nothing wrong with that and his arguments should still be met on their merits. If says that he isn't, that's fine too. His criticisms of WMC are certainly consistent with his ideology and money and other forms of support in politics often go to those that the donors already know agree with them. But since disclosure is a such a good thing ....
Update: In the comments, James Wigderson points out that Soglin has said he is being paid to go after WMC. As I said, I see nothing wrong with that. But who is paying him? And, if its One Wisconsin, where does that money come from anyway? Aren't I entitled to know so I can not do business with them?