Johan Dimitri Taikon (Miloš) was the first Roma activist in Sweden. He arrived as a child in Sweden in 1906. He wrote to the king, to the government and church leaders, demanding housing and schools for all Swedish Roma still living in tents and caravans at that time. This action led to the City of Stockholm council giving some Roma families permanent permission to rent a large house in Tanto, where five Roma families moved in, some in caravans on the plot.

Although he could not read and write, Taikon collaborated with the ethnologist, Carl Herman Tillhagen (1906-2002) from the Nordic museum in Stockholm, documenting his knowledge of Roma culture, traditions and languages, including recording 200 Romani folk stories. Together with Tillhagen, he worked with Olof Gjerdman and Erik Ljungberg, to create the first grammar and dictionary of Kalderash Romani language in Sweden.