1/3 Jan. 27 (UPI) — World leaders called for everyone to speak out against hate during International Holocaust Remembrance Day on Thursday, the 77th anniversary of the liberation of the Nazi concentration camp Auschwitz-Birkenau. “We join with nations of the world to grieve one of the darkest chapters in human history — and to bear witness for future generations so that we can make real our sacred vow: ‘never again,'” President Joe Biden said in a White House statement. “Today, and every day, we have a moral obligation to honor the victims, learn from the survivors, pay tribute to the...