Following up on an earlier post. We now have this from TPM.
Late Update: OK, the plot thickens...Gawker asserts that Ariel Attack is actually the same person as Maurice, noting the facts that only one person has been arrested, and that the anarchist posting says Ariel "is listed in the jail records and media under her birth name." It seems like that's probably right.
Assuming that's true, there's a broader implication for the story. It seemed to us in writing this post earlier that the goal of the attack was to discredit conservatives, by getting them blamed for it. That was because the one person who had been reliably reported to have been arrested had a background working for a group supportive of Democrats. But now, given that the person arrested has anarchist ties and is on the record as a vocal left-wing opponent of Obama, it looks like that interpretation was wrong. It now seems more likely that the goal was more straight-forward: to express anger at Obama and the Democrats.
Apologies for the evolving take on this story. We'll keep working to get a handle on it as things progress.