Please do take a look at this:
OWS Calls for May Day Strike
Personally, I don't think there's enough support for something like this yet but I wish there were.
Here's one comment that caught my attention:
"Once upon a time Gandhi started this way in India. It was called a day of prayer and meditation. The entire country came to a ‘non-violent’ standstill that day. Do it!"
Yes, I could wish for that approach!!!