Indian students participate in a celebration marking India's Independence Day at a school in Kolkata, India, Aug. 15, 2018. (Photos: Xinhua)

Indian school students perform on the occasion of Independence Day in Agartala, capital of the northeastern state of Tripura, India on Aug. 15, 2018.

School girls hold umbrellas as they perform during India's Independence Day celebrations in Agartala, India. August 15, 2018. (Photos: VCG)

Indian Prime Minister Narendra Modi gestures while delivering his speech as part of India's 72nd Independence Day celebrations in New Delhi on August 15, 2018.

Central Reserve Police Force (CRPF) band perform during India's 72nd Independence Day celebrations on August 15, 2018.

Security personnel march during Independence Day celebrations in Guwahati, India on August 15, 2018.