I would tend to agree. Sometimes, people are just oblivious. They don't interact with the world around them. So when they are out in the world, they don't use common courtesy simply because they don't even register the people around them. They block isles because they don't notice other people trying to walk through. They cut people off because they never looked to see if there was traffic (scary, but it happens).While I agree the world is full of these rude annoying moments I do not believe it stems from people purposefully being jerks but more an outcome of being wrapped up in themselves and their world to realize how their actions impact others.
Sometimes though, it is a conscious disregard. Sometimes, they know you are there but simply don't care. They would rather push and shove, cut in line, talk over you, give you the finger, and dare you to do something. That's the part that gets me the most. It's when they look at you, acknowledge your presence, and give you that look like "the fuck you going to do about it". The passive aggressive asshats can safely do this because it's not a crime. It would be a crime though, if I were to do what they dare me to do. The Mr. Hyde in me really gets to rattling his cage when that happens.
Ideals like this were excellent practice in the past. They are still good moral tutors. However, you can't just turn the other cheek. It'll just get your other cheek hit. You can't continually forgive others without continuing to place them in a position to require forgiveness.And earlier still. "Father, forgive us our trespasses as we forgive those who trespass against us."
As a result, I don't agree with complete pacifism. I think we should be courteous but not pacifistic. I agree it wouldn't be courteous to punch people in the face for being a complete asshole. However, the world would see far less people acting like assholes if you could respond to said behavior by punching them in the face.