One of my favorite places to visit in Philadelphia is the Italian Market. They have been operating since the early 1900s. More recently, Mexican Immigrants have also opened businesses there as well. Unfortunately, the hipsters have also invaded. While they were busy pillaging the nicest parts of Philadelphia, the Italian Market hired a security firm who walked around like they were ready to stop Isis from storming the base. Thank god for that. They chased away any of the morons looking to start trouble.
Learn the lessons from the Muslims in Bradford, the Italians all over the USA, etc.