I would suppose the “tolerant” Left does not believe the concept “heads on pikes” to be particularly threatening, if engaged in by those freedom fighters trying to establish the Worldwide Caliphate.
No double-think going on here.
But those murdering Israelis that target helpless women and children cowering in front of rocket launchers and mortar placements, well, they are just EVIL....
We need to limit high capacity spikes. Problem solved.