This was during republic day or independence day in Delhi, when the river was closed to public for security reason. That is why the boat was seized because they were breaking the law and security protocol. That is why the police had sweets as well, because it was a public holiday and public function.
बरसात के मौसम मै पुराने पुल वाली जगह पर यमुना नदी में जाना खतरनाक साबित हो सकता है برسات کے موسم میں پرانے پول کی جانب سے یمنہ دریا میں جانا خطرناک ہو سکتا ہے
It is from Delhi India. They were surfing the waters of Yamuna at the bank and water is released during monsoon time and there were chances of drowning into the water and die. They must be here during 15th August probably so the security was tad high.