Do you seriously think someone is going to listen to this garbage for an hour each day and then go into society and be polite and respectful to women? You think it doesn't spill over? I know from personal experience that is does. I had friends who started to change the way they talked about and treated women after becoming heave N.W.A listeners. Years later they told me that they felt that it influenced them negatively and that the influence was pervasive. They regretted listening to that trash.
I don't understand people. You think watching porn regularly doesn't affect how you think sex should be (and what you expect from it)? Sex can never live up to a porno, it's a fantasy. Do you think that porn doesn't contribute to sexual harassment/abuse/assault? It's not hard to find lots of men's blogs, books, movies, ETC whom it has heavily affected. Surveys show that it's negative influence is widespread.
Influential things like gangster rap and porn that go into our brains break and form neuro-pathways. They actually shape how we think long term. They are mind altering in a negative way.
People think of them like alcohol. You can drink it now and it will be out of your system in time for work tomorrow morning. This actually is not the case though. These thoughts and images will NEVER leave our minds.
Why is this all a big deal? well here on HN, equality comes up quite often. Women's right to be treated equal, to be free from sexual harassment, and from being treated as inferiors. Do you think Dre's influence in years past and presently has helped women's equality or hurt it? I think the answer is quite obvious.
If you are female, can you imagine being his co-worker, or admin assistant at Apple? How uncomfortable would that be?