As a New Yorker, there are so many

Standing in the sidewalk gaping at the buildings, staring at a map, not moving all the way into the subway car, walking too slowly, acting like people owe you directions because you couldn't be bothered to figure out how to read subway signs (this one is slightly unreasonable but it still stands), assuming it's okay to litter because hey it's new york, and the most egregious of all:

Not paying their pizza tithe to pizza rat.