[5] In 1978 Tsang attended what he described as the founding meeting of the North American Man/Boy Love Association (NAMBLA), a pro-paedophilia advocacy organisation.
[6] He edited the 1981 volume The Age Taboo: Gay Male Sexuality, Power, and Consent, a publication that argued in favor of the legalization of sex between adults and children, child prostitution, and child pornography.
[12] His assessment of sustainability for research library collections was the focus of a presentation at the Hong Kong University of Science and Technology.
[13] During Tsang's career he has also identified resources that document protest movements such as the First March for Lesbian and Gay Rights,[14] the U.S.
[16] Tsang has podcast at KUCI: Subversity 88.9 fm Irvine, CA.