see Bumiputera. Peter Bouckaert, the Human Rights Watch's emergencies director, said in an interview that "racist hatred" is the chief motivation behind the violence against Rohingya Muslims in Myanmar. One form of racism in the United States was enforced racial segregation, which existed until the 1960s, when it was outlawed in the Civil Rights Act of 1964. It has been argued that this separation of races continues to exist de facto today in different forms, such as lack of access to loans and resources or discrimination by police and other government officials. The 2016 Pew Research poll found that Italians, in particular, hold strong anti-Romani views, with 82% of Italians expressing negative opinions about Romani. In Greece, there are 67%, in Hungary, 64%, in France, 61%, in Spain, 49%, in Poland, 47%, in the UK, 45%, in Sweden, 42%, in Germany, 40%, and in the Netherlands, 37%, that have an unfavourable view of Roma. A survey conducted by Harvard University found the Czech Republic, Lithuania, Belarus and Ukraine had the strongest racial bias against black people in Europe, while Serbia, Slovenia and Bosnia and Herzegovina had the weakest racial bias, followed by Croatia and Ireland. Scientific racism The modern biological definition of race developed in the 19th century with scientific racist theories. The term scientific racism refers to the use of science to justify and support racist beliefs, which goes back to the early 18th century, though it gained most of its influence in the mid-19th century, during the New Imperialism period. Also known as academic racism, such theories first needed to overcome the Church's resistance to positivist accounts of history and its support of monogenism, the concept that all human beings were originated from the same ancestors, in accordance with creationist accounts of history. These racist theories put forth on scientific hypothesis were combined with unilineal theories of social progress, which postulated the superiority of the European civilization over the rest of the world. Furthermore, they frequently made use of the idea of "survival of the fittest", a term coined by Herbert Spencer in 1864, associated with ideas of competition, which were named social Darwinism in the 1940s. Charles Darwin himself opposed the idea of rigid racial differences in The Descent of Man (1871), in which he argued that humans were all of one species, sharing common descent. He recognised racial differences as varieties of humanity, and emphasised the