 Bihar state Congress chief, Anil Kumar Sharma, has demanded enactment of an Act by Parliament for closing opportunities to any political party or organisation that indulge in obscurantism and raise such narrow, chauvinistic issues based on caste, religion and regionalism to capture power.Angry students in various parts of Bihar damaged railway property and disrupted train traffic, as protests continued against assaults on north Indians by MNS activists in Mumbai.The police said the protesters targeted Patna, Jehanabad, Barh, Khusrupur, Sasaram and Purnia railway stations in the morning.