Family annihilators are not uncommon. In the case of the Bever family, the two eldest brothers carried out a familicide of shocking proportions. Termed the Broken Arrow Killings, Michael and Robert brutally murdered all but two members of their family in Broken Arrow, Oklahoma, on July 22, 2015. Robert Bever, 18 years old at the time of the murders, and younger brother Michael Bever, 16 at the time, plotted to kill their entire family for years.
The pair was obsessed with serial killers and wanted to gain fame and notoriety by carrying out a mass murder. Many familial murders go unsolved, but the brothers confessed everything to the police, mostly to receive publicity for their crimes.