Ducking a heated debate can be extremely revealing about a politician. Take the case of Mayor Mamdani’s outrageous hide-and-seek reaction after a Brooklyn coffee shop taunted Rep. Daniel Goldman over his support for Israel and banned him from its Park Slope location. The owner of Poetica Coffee, Parviz Mukhamadkulov, took to Instagram to write “Hey Congressman Dan Goldman, we see that you stopped by our shop today for a coffee. Do you see how it doesn’t taste like genocide juice?” next to an image of the congressman at the shop’s register. The owner is a Hamas sympathizer who has justified...