As Philadelphia celebrated the 4th of July on Friday, negotiations between the striking AFSCME District Council 33 and Mayor Cherelle Parker's administration appeared to be at a standstill.The union represents thousands of municipal workers from a broad array of services,

Mayor Cherelle Parker said the city would suspend residential trash collection, close some city pools and shorten recreation center hours, but vowed to keep the city running. Police and firefighters are not on strike, but the DC33 membership includes 911 dispatchers, trash collectors, water department workers and many others.

Philadelphia residents have been warned to brace for a largescale workers' strike designed to shut down key infrastructure, such as garbage removal, starting Tuesday.