Delhi Lt Governor VK Saxena and Chief Minister Arvind Kejriwal greeted people on the occasion of Republic Day on Thursday and asked them to strengthen democracy and the Constitution of the country.The chief minister also unfurled the national flag at his official residence in Civil Lines.Extending his good wishes to the people on the occasion, the LG paid tribute to freedom fighters and martyrs.He called upon people to safeguard, nourish and strengthen the ideals, values and provisions contained in the Constitution.