Security officers have authorized a strike over wages amidst contract negotiations. A rally was held at Mechanics Plaza on Market Street, where SEIU members chanted slogans. The security officers are employed by major tech companies.

Further details about the strike and contract negotiations are available from the source. The rally and strike authorization are part of an ongoing effort by the security officers to address their wage concerns.

The source provides more information about the situation, including the events that took place at the rally and the contract negotiations.