How is this politics. This is a stand against a tyrant, this has nothing to do with political opinions. As a human being you have an obligation to stand against tyrants, nothing political about that.
As an example, if your government instructed you to separate parents from their child, you could refuse, without any political motivations.
If you consider this a difference of opinion between the government and you, then yes, it may be political. In my view core values are not political, because you can't argue for and against them.
In my mind you have to do something when you see blatant injustice, so it is justified. If you say that what I judge as unjust is political, then fair enough, it may very well be.