an unwillingness to admit truth does not lessen the truth inherent in it. sometimes a passive outlook is a suicidal outlook.
since when has slavery or communism been ended? both institutions remain, and slavery is thriving. look at china. look at the international people trafficking industry (particularly in regards to the sex trade) the fact of the matter is associating violence with "good" or "bad" is overly simplistic. you say "prove that violence solves problems" or "violence does not solve anything" but really, both ideas are fundamentally crippled by simplicity. its just not that easy.
I wouldn't built anything in a forest, i'd look for a nice little cave or just live in a tree.. or make a hobbit hole. use nature and only add a minimum of things.