I'm taking the long view of things, so I'm less interested in one particular man falsely accused of murder than falsely accused people in general. Multiple gene

I'm taking the long view of things, so I'm less interested in one particular man falsely accused of murder than falsely accused people in general. Multiple generations is indeed a reasonable period of time. Sure, social norms might change slowly, but that slow change is often the only way to fix the problem without breaking something else to an unacceptable extent. That being said, there is role for legislation--for example, there is a lot of research into implicit and explicit biases in human minds, and there could be more public funding on how to reverse these biases, and implement them as a standard part of the curriculum in public schools.