This one-minute video from Transporation Alternatives shows the hazards of riding in a bike lane on a busy New York street. Delivery drivers and taxis use the bike lane as a load and unload zone, with taxi passengers opening doors right in front of cyclists. One driver deliberately pulled his SUV into the bike lane to block a cyclist from passing. A cab driver turned across the bike lane and nearly hooked a cyclist.
Transportation Alternatives wrote an open letter to New York Deputy Mayor Dan Doctoroff inviting him to view the video. Since the cyclists are moving faster than the other traffic, I don't think it's unreasonable to take the lane in this kind of situation.