As for the ethical aspect... I've dealt with an ill temper my entire life, although not many people who know me would think so. As a kid I was bullied a lot (both of these are likely direct products of me having ADD), and I used to get in a lot of trouble because my reaction was to let my rage boil over and fight these bullies. The best advice anyone ever gave me (Thanks Mr. McAneny) was that we aren't a tool of our anger, but instead, it's a tool of our creation. We're responsible for what we do with our anger, even if we're not the instigators. Anger typically leads to brutal solutions, both emotionally and physically, and it's so rare that this is necessary or remotely helpful. That really stuck with me.
I grew up with so many people telling me to use my anger against the bullies, and I think that reflects our cultural belief (or desire to believe) that our anger is justified, and what we do when we're angry is as well. I believe the truth is that it's almost never the correct response. The adults and peers around me who told me to embrace my anger probably didn't have a good understanding of why they believed that or perpetuated that belief.
All that is to say: We should stop believing in our anger so much, and start being responsible for what we do when we're angry. That seems like the most ethical solution.