"We are working with the officers to progress the issue.
The officer was seen as a symbol of progress by police.
Four police forces in England and Wales still do not have a single black or black British officer and progress in increasing the number of black and minority ethnic police officers has been "painfully slow", an inquiry by MPs found.
Other protesters took the presence of the police officers at the head of the march as a sign of progress.
Lt Col Mick Aston, commanding officer of 1 Royal Anglians, said: "Our progress has been dramatic and we've handed over more than half of the Nad-e Ali district to the Afghan security forces where they now take the lead in security.
One sign of progress is the return of uniformed Palestinian police officers to West Bank cities.
While administration officials held up the case as a sign of progress, critics said it signaled continuing impunity for military officers working with the Self-Defense Forces.
Jamie Murray, officer in command of B Company 2 Royal Gurkha Rifles, explained: "It is the most clear sign of progress.
"Special groups are afraid of progress and afraid of empowering the people," said Lt. Col. John Digiambatista, an operations officer with the Third Brigade Combat Team, Fourth Infantry Division.
Moreover, Colonel Davis's doubts about reports of progress in the war are widely shared, if not usually voiced in public by officers on duty.
"If this rate of progress continues, it could take 40 years for women to achieve parity with men in corporate officer positions," Catalyst says.
