Proposed legislation in Oklahoma would withhold up to 10 percent of state funding from public institutions that teach components of The New York Times Magazine’s “1619 Project,” including (as described by the bill) “Any teaching that America has more culpability, in general, than other nations for the institution of slavery; That one race is the unique oppressor in the institution of slavery; That another race is the unique victim in the institution of slavery,” and that “America, in general, had slavery more extensively and for a later period of time than other nations.”