Kamala Miri was one of the earliest freedom fighters from Assam belonging to the Mising community. He joined the Indian National Congress in 1937, forming the Miri Congress, which united over one thousand volunteers across five flood-affected districts in Assam. He also took part in the Quit India Movement and was imprisoned for opposing British rule. Miri, who was already frail and unwell, refused to sign a release bond, and in 1943 he laid down his life within the confines of Jorhat Central Jail with consummate dedication to the freedom struggle of India.

The formation of the Miri Congress by Kamala Miri in 1937 was counted as an epoch-making achievement, being the very first political organization specifically made for the Mising community. It's mostly for the act of enjoining, getting volunteers together to resist British oppression and bringing community issues to national attention. His leadership politically empowered the community and linked it to the larger independence struggle, making the Miri Congress one of the most vital voices in India's freedom movement for the Misings.

Miri's concern extended to welfare activities in the vulnerable areas of Assam. Floods and erosion being the common enemies in that part of the world, he proactively responded to the disaster by providing boats, seeds, and other basic needs to affected families. He resettled the homeless in new villages so that they could live together as a community and secure their land rights. His complete approach was the balance between political activities and social welfare that has made him a revered figure in both the freedom movement and community development for the Mising tribe.