NEW DELHI (Reuters) -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. Around 300 opposition leaders, including Rahul Gandhi of the main opposition Congress party, marched from parliament to the office of the independent election panel but were stopped by police some distance away. The protesters shouted slogans against the panel and Modi's government, saying elections were being "stolen", and tried to push past barricades before being detained and taken away in buses.