Minneapolis police officers arrested 17 people for trespassing yesterday afternoon at a labor rally in downtown Minneapolis. The protest was held to support security guards locked in a contract dispute with five companies that are hired to safeguard Twin Cities office buildings. The rally at the U.S. Bancorp Center came two days after the workers overwhelmingly rejected what the security contractors had deemed their final contract offer. The primary dispute is over healthcare costs. Among those arrested were represenatives of the Workers Interfaith Network and ISAIAH. The security guards, who are represented by Service Employees International Union Local 26, are seeking to ratchet up the pressure on large corporations like U.S. Bancorp and Ameriprise that hire the contractors to protect their buildings.