Negotiations between the striking AFSCME District Council 33 and Mayor Parker's administration appear to be at a standstill.

LL Cool J is pulling out of a Fourth of July concert in Philadelphia in solidarity with city workers unionized with District Council 33, who went on strike on Tuesday after the AFSCME union failed to reach a deal with the city.

While police and firefighters are not on strike, many of the city's blue-collar workers, such as trash collectors, are, according to Reuters.