A delegation of National Foundation for Communal Harmony along with a group of six children from different parts of the country presented the 'Communal Harmony Flag' to the Vice President of India, Shri M. Hamid Ansari to observe the 'Communal Harmony Campaign and Fund Raising Week' here today. The Vice President interacted with the delegation and called for maintaining communal harmony and national integration and wished them good success in efforts.