I've spent some on/off time this afternoon reading thru a bunch of the posts on that link you provided.
Surprisingly, given the political climate in that area, my offhand estimate makes it ~ 10/1 ratio of outraged folks to apologists/whiners.
Also from what I gathered, the local MKE rag hosting the forum was doing some heavy censoring of comments, so if anything that 10/1 ratio is very conservative.
It seems that comments were cut off yesterday early evening, but in the 20ish hours between the riot and that cut off time, there were 41 pages with ~20 comments per page.
Regardless all the other local/national issues extant, could be that the poor disadvantaged yutes just went a long way to turning WI into an electoral asset. Prolly not Tea material yet, but I'm guessing that more than a few this weekend are examples of a liberal is actually a conservative who hasn't been mugged yet . . .
For those that might have missed your link the first time: