Brothers who were racing on Kennedy Boulevard in Jersey City when one of them one was involved in a multi-vehicle crash that left one person with serious injuries were arrested Wednesday, Hudson County Prosecutor Esther Suarez said. Justin Crespo, 25, and Marc Crespo, 26, both of Jersey City, were arrested by the Hudson County Regional Collision Investigation Unit for the June 5, 2021 incident at the intersection of Kennedy Boulevard and Leonard Street in the Heights neighborhood. Justin Crespo was charged with one count of second-degree aggravated assault and one count of fourth-degree assaul…