Rubuta ci gaba don wannan sakin layi - A matsayin Babban Lauyan shi ne ministan da ke da alhakin manufofin tsanantawa na Charles II a Scotland a kan Presbyterian Covenanters. Bayan Yaƙin Bothwell Bridge
A shekara ta 1679 Mackenzie ya daure 'yan Covenanters 1,200 a wani fili kusa da Greyfriars Kirkyard. An kashe wasu, kuma ɗarurruwan sun mutu domin zalunci. Halin da ya yi wa Covenanters ya ba shi lakabi "Bluidy Mackenzie". An yi jayayya cewa duka shi da Claverhouse sun kiyaye harafin doka. Ba a bayyana ba ko sunan "Bluidy" na zamani ne; ya bayyana a cikin "The Heart of Midlothian" (1818), wanda aka ba Davie Deans. Harshen jini ya rinjayi shaidar da aka buga na Marion Harvey, wanda aka rataye a 1681, wanda ya kira jininsa a kan Mackenzie: ""wannan azzalumi mai banƙyama, George Mackenzie, mai ba da shawara", da sauransu.