Which year did Alvin Cheng organize the rally with his schoolmates in support of the hong kong umbrella movement?
Umbrella Movement The Umbrella Movement () is a political movement that emerged during the Hong Kong democracy protests of 2014. Its name arose from the use of umbrellas as a tool for passive resistance to the Hong Kong Police during the occupation which was sparked by the decision of the Standing Committee of the National People's Congress (NPCSC) of 31 August of that year which prescribed a selective pre-screening of candidates for election of the region's leader.
Lo Hoi-sing Lo Hoi-sing (羅海星; 1949 – 14 January 2010) was a Hong Kong businessman born into a communist Hong Kong family. He is famous for rescuing Chinese dissidents in Operation Yellowbird after the Tiananmen Square protests of 1989, for which he was arrested in 1989. He was later released at the request of British Prime Minister John Major in 1991.