On 8 February 2020, Leung and people of Hong Kong Indigenous helped small shops on the street to move to Portland Street and called on social network to help when the officiers wanted to stop all the shops from working. At midnight, it turn into a civil unrest between protestors and police. Leung started a election parade so as to cover the protestors. Leung was then arrested together with 20 other members but Leung still got supports from some political organizations and activists such as Youngspiration, and Wong Yuk-man. Leung finally lost the by-election with 66,524 votes, 15.3% of the votes, behind Alvin Yeung and Holden Chow.