STOCKHOLM — It’s a tough pill to swallow for many survivors and families of victims that Anders Behring Breivik, who killed 77 people in gun and bomb attacks in 2011, gets another day in court, this time claiming to be a victim of human rights abuses. Gone from the public eye for four years, Norway’s worst mass killer is suing the government over his solitary confinement, which he says is inhumane. Some survivors will try to ignore the four-day trial starting Tuesday in a gym-turned-courtroom inside Skien prison, where Breivik is serving a 21-year sentence for terrorism and mass murder. “I won’t read newspapers that week,” said Dag Andre Anderssen, who survived Breivik’s shooting massacre on Utoya island and is the deputy leader of a support group for survivors and the bereaved.