People speaking on their phone using a loudspeaker.

People who don't understand basic elevator etiquette and attempt to walk in before people get off.

People who play Karaoke loud enough for anyone outside of their home to hear.

People who drive two motorbikes / bicycles beside each other and talk, thereby blocking traffic.

People who cut in line.

People who don't clean up after their pets.

People who get angry at the animals and not the owners for the above.

People who display a total ignorance of the most basic facts regarding other countries.

Dysfunctionally incompetent and/or lazy staff (beyond what is acceptable for low income workers).

Bureaucrats who clearly prioritise covering their ass over performing the most basic functions of their job.

People who are rude/dismissive to others who are smaller/weaker/meeker than them.

Racist taxi drivers.

Asshole bus drivers.

People who don't apologise when they are wrong and know it.

I can think of more but I'll stop there.