I have found bicycling in New York City surprisingly easy and less stressful than expected; there are even well-marked bike lanes that for the most part were not blocked. This post office van was unusual, and particularly arrogant, considering that the parking spaces to its left are empty. How much more effort would it have been to actually pull into the spaces?
The real problem for cyclists in New York are the pedestrians; they are nuts. Red lights mean less than nothing, they are a challenge. Want to hail a cab? Stand in the bike lane.