With 211 million followers on social media, the multibillionaire seems intent on using his global platform to rattle British politics.

Even quaint corners of the country are seeing a rise in drug violence and crime. Just ask the mayor of Morlaix, which has a population of about 15,000.

To curb gang killings and a rise in homicides, the measure empowers the military to make arrests and allows the authorities to enter suspects’ homes without warrants and deny them bail.