A synagogue has been vandalised and Jewish-owned businesses caught up in widespread looting as violent protests sweep across France, prompting Jewish leaders to demand President Emmanuel Macron declare a state of emergency.The attacks have heightened fears for public safety as more than half a million demonstrators take to the streets, with riot police clashing with protesters and masked looters ransacking stores.Governments are under pressure to respond as young people across Europe take to the streets to protest rising living costs, soaring housing prices and deteriorating education systems.Demonstrations have spread across France, Spain, Portugal, Italy, Belgium and Albania with protesters demanding...