LL Cool J and Jazmine Sullivan are standing in solidarity with Philadelphia workers on strike as they fight for fair wages.

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.

LL Cool J won't perform in the Wawa Welcome America Fourth of July Concert on Benjamin Franklin Parkway on Friday, saying he won't "cross a picket line" amid the ongoing strike in Philadelphia involving the city's largest municipal workers' union.