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Boxing will be a good option, is not a martial art, I know, but you ll be able to be as offensive as you want, and with an exellent defense stance, or muay thai too, I prefer box defence stance thought. Krav Maga would be also an excellent option because you will be more violent and you ll be able to defend in the floor too. I recomend those 3, because the difference with martial arts is that you won't need years to really begin to learn something.
And you will do tons of sparring, instead of katas, and sparring is the thing that really teach you how to fight. Some martial artist after years of practice, the realice that they don''t know how to fight in real fights.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.