Short answers, pulled from the story.
The Gandhi cap is a white coloured sidecap pointed in front and back with a wide band made from khadi fabric. Mahatma Gandhi sat in conversation with Kaka Kalelkar during the early 1920s to discuss headwear options for Indian men which led to its creation.
Mahatma Gandhi wrote that he chose white cloth specifically because white clothes are supposed to be washed more regularly and are easier to wash. White cloth offered practical advantages because it could be washed more regularly than other colors while fitting inside a pocket against heat.
Jawaharlal Nehru served as India's first Prime Minister from 1947 until his death in 1964 while maintaining this tradition. Lal Bahadur Shastri and Morarji Desai continued this practice as succeeding prime ministers.
Thousands of people wear Topi during Wari events in Dehugaon, Maharashtra every year. The cap remains the most popular everyday headgear worn by men in rural parts of Maharashtra today.
Anna Hazare started an anti-corruption movement in India during August 2011 from his home state of Maharashtra. Thousands of people wearing Gandhi caps accumulated at Ramlila Maidan in Delhi to support Anna Hazare on his fast-unto-death.