The century where we generally assume that both members of a domestic partnership or marriage are fully aware of the actions of the other and, most likely, support said actions taken by the other, especially when those actions are public and controversial.
Assuming that two people in a relationship agree with each other's politics is a good way to make an ass out of yourself. Causing trouble at work because you dislike the politics of somebody's spouse is totally over the line and you've said nothing to make me question that.