"With the number of survivors declining, in 1996, the 75th anniversary of the riot, a bi-partisan group in the state legislature authorized formation of the Oklahoma Commission to Study the Tulsa Race Riot of 1921 (...) The park [to the 800 dead riot victims] was dedicated in 2010."

No worries then, in 48 years China will acknowledge what happened at Tiananmen, and in 2078 Beijing will get a lovely new park.