LONDON — Two people were killed and at least three were hurt in an attack on Thursday at the Heaton Park Hebrew Congregation Synagogue in Manchester in northwest England on Yom Kippur, the holiest day of the Jewish year. The attacker, who was wearing what appeared to be an explosives vest, was shot dead by police, who later called his actions a terrorist attack. Two people were killed and at least three were hurt in an attack on Thursday at the Heaton Park Hebrew Congregation Synagogue in Manchester in northwest England on Yom Kippur, the holiest day of the Jewish...