Most of the markets in the national capital are closed today as traders observed a bandh in protest against Foreign Direct Investment (FDI) in retail sector.BJP has also joined the traders' protest by organising marches and burnt effigies of several leaders belonging to the ruling party. AIR correspondent who visited several areas in Delhi reports Sadar Bazar, Kamla Nagar, Chawri Bazar, Karol Bagh, Kashmere Gate, Tilak Nagar, Rohini, Krishna Nagar and several other markets are closed.