People don't deliberately set out to do evil. Sure, people harm each other every day. But this is generally not the result of evil intentions. Rational people don't look themselves in the mirror each day and say, "today I'm going to do evil things for evil reasons". People act for what they think are good reasons. They think their intentions are good, even though hindsight may later reveal that they got it wrong.
So when we are harmed, or simply frustrated by the actions of other people, we need to remind ourselves that they are probably doing the best they can. We all struggle through life, trying to make good decisions. But we aren't perfect. Nobody's perfect. So, we shouldn't be surprised when people make mistakes. Be patient and remember, life is difficult for them too.