Former Gov. Andrew Cuomo’s top aide Melissa DeRosa has claimed that then-Mayor Bill de Blasio deliberately failed to deploy enough cops during the 2020 Black Lives Matter protests in New York City because he feared violent clashes between the NYPD and protesters would embarrass him. Like many other issues, how to handle the protests that erupted over the police killing of George Floyd in Minnesota triggered disagreements between Cuomo and de Blasio, recounts DeRosa in her forthcoming memoir, “What’s Left Unsaid: My Life at the Center of Power, Politics & Crisis.” “We learned that a high-ranking member of the police...