The mayhem broke out during debate on a motion from the opposition Scottish National Party, or SNP, urging an immediate cease-fire, the release of all Israeli hostages held by Hamas and “an end to the collective punishment of the Palestinian people.”

The main opposition Labour Party, which is divided over how strongly to criticize Israel, submitted a tweaked version of the motion calling for an “immediate humanitarian cease-fire,” without the mention of collective punishment.

The governing Conservatives put forward their own amendment, which backed an “immediate humanitarian pause,” followed by “moves towards a permanent sustainable” cease-fire.