With Karma, people may get pissed off if they think someone is doing something to hurt them, but that second person may be balancing out what the first person did to them which the first person is not willing to acknowledge, or which occurred in a previous lifetime. Judgement is up to G-d. People need to get out of the habit of judging others. Or it could be that one person hurt a second person who hurt a third person and the third person is now hurting the first person. It all balances out, but it is not necessarily a one-to-one correlation. Spirit uses whatever it needs to balance Karma.
Jeff Sonnenburg