The San Francisco hotel stand-off is once again moving toward it's boiling point. Thirty seven protestors were taken into "protective custody" by police on Tuesday. They were a portion of a 500 strong contingent of UNITE-Here local 2 employees who marched on the San Francisco Hilton. The demonstration came out of frustration over a contract negotiation stalemate between the union and 14 downtown hotels. The two sides had agreed to a "cooling-off" period last November after a two-week strike and six-week lockout. Health, contract length, wages and pensions are all concerns of the workers.