Karma is a human invention to make us feel good about the idea of 'balance in the universe.' That good guys get rewarded and bad guys always get punished in the end. It doesn't really hold water when I ask you to look at something like Unit 731 or various government administrations that have happily marched people into thinly veiled wars and still get to cash out a fat pay-check to this day.
It's more apt to say, 'if you live by the sword, you'll die by the sword' than anything, because doing bad shit just increases your chances of meeting a bad-end. Actions have consequences, but not all of them catch up to you personally.
I believe the universe is chaos, life is chaos,
and that chaos itself is subjective.
'What's chaos for the fly is normal for the spider.'