LONDON (Reuters) – For an October revolution, dress warm. That’s the word going out – politely – on the Web to rally street protests on Saturday around the globe from New Zealand to Alaska via London, Frankfurt, Washington and, of course, New York, where the past month’s Occupy Wall Street movement has inspired a worldwide yell of anger at banks and financiers.

How many will show up, let alone stay to camp out to disrupt city centers for days, or months, to come, is anyone’s guess. The hundreds at Manhattan’s Zuccotti Park were calling for back-up on Friday, fearing imminent eviction. Rome expects tens of thousands at a national protest of more traditional stamp.