For a slightly more recent example, look at germany. Sure they were eventually defeated, but only since most of the rest of the world combined forces against them.
The very fact that the rest of the world combined forces against Hitler and the Nazis is more supportive of Fritjof Capra's point than yours. It is, in fact, an excellent example of cooperation triumphing over destructive aggressors.
Your saying reminds me of that old saw "Violence never solves anything" which is blatantly untrue.
It's all a matter of perspective, isn't it? Creation and destruction are entirely subjective terms. Violence describes an intense action, force, or change. A volcano eruption might be seen as destructive or constructive but either way, it is violent. In that context, it is hard to read any such meaning into grinder's post or Capra's quote as you have.
"My two cents aren't worth a dime.";