Dozens of Indian opposition leaders were detained in New Delhi on Monday as they shouted slogans, jumped barricades and marched to the Election Commission in a rare public protest against what they say are electoral malpractices.

India’s opposition parties have held a protest calling for the rollback of a controversial revision of the voter list in one of the country’s poorest states, where key elections are scheduled in November.

Opposition MPs, including Rahul Gandhi and Mallikarjun Kharge, protest against electoral roll revision, detained by police.