What is humbling and increases our tolerance for others is the fact that we could end up anybody. People who took a wrong turn, made really bad decisions, could have been us. We did not walk in their shoes and a lot depends upon circumstances. This doesn’t exonerate wrong behavior, but it tempers our attitude.
The truth is people often follow the path of least resistance whether it be good or bad. When observing bad behavior it is good to keep this principle in mind.