Various agitating political parties and other groups aligned with the Federal Alliance and United Democratic Madhesi Front (UDMF) have staged demonstrations in Kathmandu and several other districts as a protest against some of the provisions in the constitution, which was promulgated on September 20 last year. A group of protesters staged demonstrations at Maitighar Mandala in Kathmandu and another group at Ratna Park in the capital city on Monday. They termed the day as black day. The Madhes-based parties have been continuously protesting against the constitution terming some of the provisions as discriminatory against the Madhesi people. The protesters of the different groups wearing black armbands and black bandanna strips on their heads took out separate rallies in Kathmandu. They also staged demonstrations calling the public to switch off lights across the country to protest the constitution in the evening on Monday. मधेसी मोर्चासहित संघीय गठबन्धनले राजधानीलगायतका देशका बिभिन्न स्थानमा संविधान जारी भएको दिनलाई 'कालो दिन' भन्दै प्रदर्शन गरेको छ । राजधानीमा शान्ति बाटिकामा जम्मा भएका गठबन्धन कार्यकर्ताहरुले कालो झण्डा प्रदर्शन गरेका थिए । प्रदशर्नकारीहरु शान्तिबाटिकाबाट जयनेपाल हुँदै घुमेर फेरी शान्तिबाटिकामा नै आएका थिए । गत बर्ष आजकै दिन नयाँ संविधान जारी भएको थियो । मधेस र थारु क्षेत्र केन्द्रित दलहरुले उक्त संविधानमा असहमति जनाउँदै झण्डे छ महिना लामो आन्दोलन गरेका थिए । त्यस क्रममा करिव ५० जनाको ज्यान गएको थियो ।