Kathmandu. Chairman of the Communist Party of Nepal (UML), KP Sharma Oli, has emphasized the need to protect the constitution and keep the rights of the people alive.While extending best wishes to all Nepalis residing at home and abroad on the occasion of National Democracy Day, he stated that it is necessary to protect national independence, preserve the dignity of the nation, and safeguard the nation's damaged heritage.In his congratulatory message, he said,