About 90 percent of India's financial transactions are done in cash. Indian Prime Minister Narendra Modi earlier this month announced the currency ban but most opposition parties on Monday are holding protests over the decision in what they're calling a "Day of Rage."
Protests have been held in the cities of Kolkata, Lucknow and Bangalore, as well as in India's Kerala and Tripura states, which are ruled by India's Communist Party.
Though the opposition parties agreed to protest, they did not agree on the means -- with some calling for a strike -- or the extent to which they oppose the demonetization, Times of India reports.
Amit Shah, the president of the Bharatiya Janata Party, to which Modi belongs, said the opposition are merely opposing everything Modi is doing. Some opposition parties last week stalled Parliament and demanded Modi apologize for the demonetization decision.