Thank goodness we don't live in medieval times, when people fought wars over ideas.
The Greens have every right to run, that's what democracy is, and they should argue their point by saying how they think people should vote, not by telling us to be silent.
A truly common culture is not one in which we all think alike, or in which we all believe that fairness is next to godliness, but one in which everyone is allowed to be in on the project of cooperatively shaping a common way of life.