After that, he met Yoko Ono and became a huge advocate FOR feminism. He never denied his past as a wife beater, but he deeply regretted it (The song Getting Better is about that). As far as we know he really did change and never did it again. Is it a shame that it happened in the first place? Yes, it is, and I’m not saying we should ignore it. But what happened happened and that can’t be changed. An apology and a real determination to prove that he changed is the best that could be done.