Since Jews take atonement seriously, that makes it the holiest day of the year. At synagogues across the country, other British Jews were clustering together for prayer in large groups. As one said to me: “It is the news we have all been dreading.”Jewish community events have always taken place behind tight security, run by a volunteer organisation known as the Community Security Trust. My partner’s children attend a Jewish school, which means they walk through anti-terror security every single morning – this is their norm. Like the victims in Manchester’s Heaton Park, we could have been attacked simply for attending a Jewish house of worship.