The initial demonstrations and riots were labour disputes that began as early as May 1967 in shipping, taxi, textile, cement companies and in particular the Hong Kong Artificial Flower Works, where there were 174 pro-communist trade unionists.
Awal unjuk rasa dan kerusuhan adalah persengketaan buruh yang dimulai pada awal Maret 1967 dalam pengiriman, taksi, tekstil, perusahaan semen, dan khususnya Hong Kong Artificial Flower Works di mana ada 174 buruh prokomunis dan serikat buruh.