Lists that can only be viewed as slideshows
People getting on trains before everyone has got off.
People without any awareness of where they are fucking standing. Particularly at the grocery store where there are aisles and only a certain amount of space for others to get through.
People who stop at the end of an escalator to think about what direction they are going, I am going to walk into you, I'm sorry but I'm not sorry since I don't have a choice.
People texting and driving... they're always going a good 10+ mph slower than rest of traffic or swerving or missing a green light but the second you honk at them, you're the bad guy.
When I do a web search for something that can be answered in a single sentence, and all the results are 10 minute videos.
When a supervisor harshly reprimands and humiliates an employee in front of coworkers.