Naw, I don't think so.
If there is anything that divides into competing factions like left-wing, or progressive politics, it's religion.
In fact, it always seemed to me that the model for internecine battles, was between the sects of the Catholic Church. And isn't schism--the division into sects--originally a term in theology?
There is nothing so fervent as a true believer--and while they may be found among political activists, they can certainly be found among the religious. They will spilt from larger bodies over fine doctrinal points.
Who can tell which is the more fervent, or which divides into smaller and smaller, but more determined sects?