See that flag? It is the state flag of Wisconsin. On the top there is the name of the state, "Wisconsin," and on the bottom is the year that Wisconsin was admitted to the union.

Politico reporter Donovan Slack thought that this Wisconsin state flag was, in fact, a union flag, and that furthermore Barack Obama's choice to stand under this union flag in Wisconsin made it "very clear what side" he's on. Whoops.

Here's the cached version of Slack's story on this important issue—complete with photographic proof—which was posted at 12:02 p.m. yesterday on Politico's website (since disappeared):

WH flies labor flag in Milwaukee MILWAUKEE — It's very clear what side President Obama is on here in Wisconsin. Behind the stage where he will speak today are two flags: an American one, as usual, and right alongside it — and a flag for the local union, Wisconsin 1848. The president has been mum in recent months on the battle raging in the Badger State between unions and Republican Gov. Scott Walker, who is facing a recall election largely pushed by labor after he pushed through laws effectively taking away collective bargaining rights in the state. Here at Master Lock, Obama is speaking about domestic manufaturing and highlighting what he calls "in-sourcing," bringing jobs back from overseas. The padlock manufacturer brought roughly 100 jobs back from China to this factory —union jobs, the White House has noted. Walker had been expected to join the president but canceled this morning because his office said he has the flu.

We all make mistakes.