AN advisory panel in the Netherlands has told the government to acknowledge that the 17th-19th century transatlantic slave trade amounted to crimes against humanity, and to apologise for the Dutch role. The independent panel, whose recommendations are not binding, was set up following protests over the murder of George Floyd, an African-American in police custody in the United States. It noted that Dutch people's knowledge of the country's colonial past is weak and recommended it be taught in schools. "History cannot be turned back," chairwoman Dagmar Oudshoorn said in a summary of the panel's findings. "However it is possible to…