Witnesses and local media report at least four more protesters killed as death toll passes 80.
TONY CHANG: Defiant protesters again marched through the streets of Mandalay on Sunday in strong voice and in large numbers. They were clearly unbowed by the violence of the day before. That's when the security services shot dead at least six people in a crackdown in Myanmar's second city and injured many more.
But with the death toll rising, a call for revolution from the former vice president now leading a civilian administration in hiding.
MAHN WIN KHAING THAN: This is the darkest moment of the nation and the moment when the dawn is close. This is the time for our citizens to test their resistance against the dark moments.
TONY CHANG: Speaking of a new federal democracy, the message was clearly aimed at bringing diverse ethnic armed groups together to overcome the army and their coup.
MAHN WIN KHAING THAN: When forming our resistance, unity plays a vital role. Despite our differences in the past, this is the time we must grip our hands together to end the dictatorship for good.
TONY CHANG: These diverse ethnic armed groups are scattered across Myanmar's borderlands. Divided, they don't represent a significant threat to the military, who've been fighting them for decades. United, they could be a considerable obstacle. But there's long been distrust between these groups and the NLD, or National League for Democracy. Bringing them together would be no small task.
In peaceful defiance, protesters break the curfew to honor the dead in candlelit vigils across the country.
PHOE THAR: We come out on the street to show that we are against military dictatorship by breaking the curfew order imposed by the junta. We will continue fighting.
TONY CHANG: But as the military continues with its brutal tactics on the streets, calls for a revolution that's not so peaceful may gain increasing support. Tony Chang, Al Jazeera.