According to the Football411.com website, the West African nation is currently in the midst of war, with government and French forces battling rebel insurgents in the north.
Keita wore a T-shirt with the words "Peace for Mali" embossed on it when he collected his man-of-the-match award after the Eagles' first game of the tournament and he has spoken since about his desire to see peace restored.
The 33-year-old then draped his country's flag over shoulders when addressing the media following his team's penalty shoot-out win over South Africa on Saturday.
"Our win ensures that Mali can hold their heads high. They will all be celebrating and for us to provide the joy is an honour," the talismanic midfielder said.
"I'm wearing the flag that is flying in the north now as proudly as it is flying in the south," he said in a reference to towns recaptured in recent days.
"It has been as important for us to win for the people as it has been for ourselves."