Sorrow be damned, and all your plans. Fuck the faithful, fuck the committed, the dedicated, the true believers; fuck all the sure and certain people prepared to maim and kill whoever got in their way; fuck every cause that ended in murder and a child screaming.
Wish people would just STOP sharing that quote without context. It's said by a fucking asshole, and I'm being generous here. No details because I fucking hate content warnings.
(It's in Iain Banks' Against a Dark Background, an otherwise fine novel by the way.)