It started shortly after Obongo's inauguration. It'll heat up after the next election, especially if the Bolsheviki manage to steal it. It will further embolden the Nig-tifa-raza to up their violence with impunity.
I think it started way before that. It has its roots in the works of philosophers like Foucault and Derrida and in the denial of the existence of any objective reality.
