Question

what is umbrella movement....

Answer 1

the democracy protests of Hong Kong is know as umbrella movement it's run through out 79 days it run from 28 September - 15 December 2014 ( for 79 days )

Answer 2

umbrella movement is a series of sit-in-street protest often called umbrella revolution and sometimes used in interchangeably with umbrella movement occurred in Hong Kong from 26 September to 15 December 2014.
Hope you got it