Complex sentence: Since the late 20th century, however, the book has come under criticism for its alleged racist portrayal of the Congolese people, and its portrayal of big game hunting and mass slaughter of African wildlife.
Split into simpler sentences: Since the late 20th century, however, the book has come under criticism from some for its portrayal of the Congolese people, which several critics have called racist. The book has also been criticised for its portrayal of big game hunting and the mass slaughter of African wildlife.