Several thousand janitors and supporters have rallied in downtown Los Angeles to demand higher wages as they ready for a possible strike.
Friday's noisy but peaceful demonstration comes a day before a contract between workers and janitorial companies expires.
The janitors are demanding higher pay, better working conditions and an end to what they call unfair labor practices.
Last week, more than 20,000 unionized janitors authorized a strike if an agreement on a new contract isn't reached. The Los Angeles County Federation of Labor has said it will support a strike, which could come as early as Monday.
The protest is one of several expected in downtown Los Angeles this weekend.
Bernie Sanders supporters will rally Saturday, followed Sunday by a march for immigrant rights and against Donald Trump.