I've never personally seen an account of an algorithm with any ethical bias. I would love to see one in all seriousness, the implications of such an algorithm would be massive. What I have seen is objectively unbiased algorithms (such as neural networks) given input data with objectively true labels (such as racial, gender, etc,) producing objectively unbiased (albeit alarming) results. Now I would love to sit here and argue about equality, equity, and the like but I'll still be waiting for the example of a biased algorithm.