One of the issues that
New Yorkers Against Religion-Based Bigotry will eventually concern itself with is the rights of sex workers. In preparation for this, I've located some relevant organizations and websites.
None of these groups seem to be holding any events in the near future, other than regular public meetings of SWOP-NYC.
P.S. (May 16, 2009): I just now learned of the existence of a new Meetup group,
Savvy Sex, which is concerned about a variety of issues including the rights of sex workers.