A huge crowd of people are in the park flying kites. 
a large crowd of people at the park with some playing with a large kite 
A crowd of people getting ready to fly a kite.
Several people gathered in a park sitting, standing and flying kites. 
What looks like a giant kite, featuring trailing ribbons and a death's head, sits with one end buried in a park-like area, surrounded by groups of milling and sitting people, enjoying the spectacle.