ROME (AP) — New York City Mayor Bill de Blasio and his family are wrapping up a whirlwind vacation in his ancestral homeland of Italy, complete with cheering crowds, paparazzi and, yes, even proof Italians do eat pizza with a knife and fork. The videotaped scuffle threatens to reignite distrust of the New York Police Department in minority communities, a long-standing problem that de Blasio has vowed to improve. De Blasio, who has monitored the situation from Europe, now faces, according to one ally, "a defining moment," and his response will be closely watched by minority groups that were a stronghold of support and a police department adjusting to the post-stop-and-frisk era. The video shows Garner, who is black, placed in an apparent chokehold by a white officer and is knocked to the ground. The next day, as the story dominated city headlines, de Blasio appeared with Police Commissioner William Bratton at a hastily called news conference. At another, several City Council members urged de Blasio to keep his word about helping black and Latino men who felt unfairly targeted by the police tactic of stop-and-frisk, which allowed officers to stop anyone deemed suspicious. The family was hailed as royalty, with banners hung on buildings, cakes decorated with their names and thousands of people crammed on the streets.