The resolution responds to an order signed in March by President Donald Trump, which directs National Parks staff to flag any displays that may be seen as disparaging America's past.
Local lawmakers and community members fear the directive could lead to the removal of an exhibit at 6th and Market Streets that highlights the lives of enslaved people held by President George Washington at the site of his former residence.
READ MORE | Fears for Independence Mall as Trump orders removal of displays that 'disparage' American history
"We want to continue fighting back so the exhibit stays in place," said Council President Kenyatta Johnson.
The Avenging the Ancestors Coalition, a group that advocated for the creation of the exhibit, brought the display here.
On Thursday, concerned citizens spoke during council's public comment portion of the meeting.
"The federal government, particularly the Department of Interior, is actively participating in a badge of slavery continuing the legacy American freemen experience today," one speaker said.
Johnson emphasized the city's stake in the matter, noting, "We do own the land, and so many years ago we leased the land to the federal government. That's more the reason why we have a stake in making sure it stays there."
When the executive order was signed, the White House released a statement saying, "President Trump is ensuring that American history is celebrated accurately, fairly, and with pride."
Visitors to the exhibit shared mixed reactions to Thursday's adoption of the resolution.
"I think they need to be edited. I think what's there is true, but they are leaving a lot of the story out," said Jackie Cane of Center City.
"If you don't know your past, you're condemned to repeat it. You really have to know what happened, how it happened," said Alejandro Angus, visiting from Colombia.
The order instructed that flagged elements be removed by Sept. 17. That deadline has passed, and the exhibit remains untouched.
City lawmakers say they are exploring all legislative and legal options to ensure its preservation.