Buddy: nothing in your post has anything to do with why any bank anywhere wanted OWS gone. The banks didn't like OWS because it represented lowly commoners daring to challenge their power and authority. It's as simple as that.
You're story of the banks "just trying to do their jobs" in the face of evil, evil peaceful protestors saying mean things is heart wrenching, truly. The article talked about cracking down on the protests themselves, not about the banks trying to ensure donations were made in a legally sound manner.
There is no valid reason to crackdown (your word choice) on peaceful protest. That's why the right to peaceful protest is enshrined in the constitution, rather than as some addendum to some bylaws.
You're either extraordinarily naive or dishonest. So tell us, which is it?