Mayor Bill de Blasio is jetting off to Germany on Thursday to protest President Trump and other world leaders attending the G20 Summit meeting. The day after a cop was assassinated in The Bronx, de Blasio skipped an afternoon swearing-in ceremony for 524 new NYPD recruits ahead of his flight overseas. snip The cost is being paid for by organizers of “Hamburg Shows Attitude,” said mayoral spokesman Eric Phillips, who’s among the aides joining de Blasio on the trip.