Grunty
I neither know nor care what your political persuasion is AGAA4, I simply don't see what is remotely goady in posters discussing the subject. But maybe you're more susceptible to what goads you.
What is 'the subject', though?
A 'political' heckler, a party-pooper, someone wanting to spoil the Christmas gesture, or the policies of Yvette Cooper, which will still be available for criticism or applause after the NY.
Even soldiers in wartime have held truces over Christmas, and it doesn't get much more 'goady' than the trenches.