Visitors gather at the Apartheid Museum entrance that is marked with Whites and Non-whites signs in Johannesburg, South Africa, May 17, 2019. The Apartheid Museum opens a window into South Africa's past struggle with colonial domination, injustices and racial segregation while spotlighting the dawn of an independence era marked with racial integration and just rule. May 18 marks the International Museum Day. (Xinhua/Chen Cheng)