Gunmen wearing military fatigues opened fire outside synagogue in the German city of Halle on Wednesday At least two people, including one woman, were killed in the attack and several more were injured Police say they have arrested one man and urged people to 'stay alert' while the manhunt continues Shocking video shows one man dressed in black tactical gear and wearing a helmet firing on the street Attack happened on Yom Kippur, the holiest day in Judaism, which is traditionally spent fasting and praying At least two people have been killed after gunmen attacked a synagogue in Germany on...