"What do we want? Justice. When do we want it? Now," chanted protestors.
Claims of excessive force caught on dash cam video after a traffic stop of Floyd Dent in Inkster has sparked protest.
"We are standing because we believe this is an injustice and it's propagated by the city of Inkster," said Rev. Charles Williams II, president of the Michigan Chapter of the National Action Network.
"I'm more afraid for my son to fall into the hands of white police officers, than into the hands of a black carjacker," said Crystal Linton, from the Inkster Chapter of the National Action Network.
Inkster Police Chief Vicki Yost says she was one of the first to view the video and called for an investigation herself.
Floyd Dent, who can be seen getting punched by police, says what's there to investigate?
"To me justice is having the person that done this to me, locked up," he said.
He claims that he was set up for drug charges after the arrest.
"I saw them being planted in my car," said Dent.
"He planted those same drugs on this man," said Rev. Williams.
"Again I think the dialogue is important and I appreciate your first amendment rights to free speech," said Yost.
Yost involved herself in the protest outside her department, pleading for patience.
"There is an ongoing investigation and independent investigation being conducted by the Michigan State Police, we will act accordingly once those findings are in," she said.
Rev. Williams said, "The state police were there, so how are they going to investigate themselves?"
"Sir, again, there is an independent investigation and the results will go before the Wayne County Prosecutor's office," said Yost.
One person with internal knowledge of the Inkster Police Department stood with protesters, former Inkster Police Chief Hilton Napoleon.
"Some of these officers quite frankly need to turn their badge in," said Hilton Napoleon, former Inkster Police Chief.
It's been nearly a year since Chief Napoleon was in charge of the department and says the department should be dissolved and taken over by the sheriff's department.
Napoleon said, "This cannot be fixed, because you have too many officers in there that lack moral integrity."
The current chief of Inkster police says she supports the protesters' right to voice their concerns and even met with some in private today.
She says this is a long process and the investigation is just beginning.