Why were our vans calling for the return of child hostages forced out of London?

If there are people threatening harm to other people, the priority of the police must surely be to stop the people threatening harm. But this seems to be less and less the case, and even more so in the past couple of weeks since Hamas terrorists murdered over 1,400 Israelis and took some 200 people, including babies, children and the elderly, hostage, and London’s streets have erupted.