In the wrong climate, museums can feel like graveyards. The Hong Kong News Expo, a Newseum-inspired commemoration of Hong Kong’s long journalistic history, opened last month. That was just weeks after Financial Times Asia Editor Victor Mallet was expelled from the territory for acting as host to a Hong Kong Foreign Correspondents Club luncheon for an activist advocating independence from China and other disturbing events signaling threats to press freedom. Thus even the sign on the door, promising those who visit “Fair and Objective Respect for History,” can be read defensively in that charged context.