In 2000, he edited and co-authored a second work, on Canadian federal government surveillance of marginal and dissident political and social groups, Whose National Security?
In 2010, Kinsman's newest book, The Canadian War on Queers: National Security as Sexual Regulation, co-written with Patrizia Gentile, was published by University of British Columbia Press and released on 1 March.
[5] Gary Kinsman was involved in the Young Socialists during high school in the early 1970s, where he first came in contact with the gay liberation movement.
[8] In 2015, Kinsman was active in a campaign lobbying for a formal apology from the Government of Canada for the purges of LGBT people from the federal civil service in the 1950s and 1960s.
[9] In 2024, he publicly resigned from Pride Toronto membership, citing the organization's failure to acknowledge or take action on the Queers in Palestine[10] call to stop the "probable genocide in Gaza".