Edited sentence: For example, the American birth control campaigner Margaret Sanger - considered in other aspects a progressive person far ahead of her time - could write casually: "(...) The aboriginal Australian, the lowest known species of the human family, just a step higher than the chimpanzee in brain development, has so little sexual control that police authority alone prevents him from obtaining sexual satisfaction on the streets" (see Margaret Sanger#Psychology of sexuality).Well into the 20th Century, Indigenous Australians were - both in Australia itself and in many other countries - the subject of widespread crude stereotyping