This is true, but the history of child welfare in this country was started by the animal welfare organizations of the late 19th Century:
"In 1867, Henry Bergh, a former United States ambassador to Russia, was the founder and first President of the American Society for the Prevention of Cruelty to Animals in New York City......Burgh brought by special warrant to the Supreme Court of New York, the case of a severely abused child, "Mary Ellen" and proved his claim that the child's custodians had beaten her cruelly and that she should be brought under the protection of the court. The resulting court action and publicity led to the founding of the Society for the Prevention of Cruelty to Children."
There is a difference between people and animals, to be sure, but the line is filament thin when it comes to the "innocent".
And now some advocate putting animals before people.