If it was a reaction to ANY sort of protesting then they would have crushed OWS on September 17, 2011. That didn't happen. They drafted those plans in case something happened that necessitated it. No such thing happened, so they didn't act on those plans.
I'm as happy as anyone to jump on any kind of police state bullshit, but this just seems like the FBI doing its job to me. A group of malcontents starts organizing a protest for a future date and whips up a large amount of online support well in advance of the event...sounds like something law enforcement ought to be aware of in advance. Such a gathering, even if intended to be peaceful, could easily become combustible under the right circumstances, so it's only prudent to be prepared.
This sounds like due diligence that's being worded to make it sound as scary and "fascist" as possible.