@Helen350 Would you like to elaborate on what "common sense" entails in your construct of it?
I mean, if we were living through a sci-fi Martian invasion, and we knew that the evil aliens hitchhiked in travellers' cars and reproduced themselves when they arrived in a new household, we'd probably think that collectively as a species we should reduce the exposure of one stranger's household from another, for the sake of defeating the aliens. In this scenario, how does your concept of "common sense" differ?
Perhaps you believe that these Martians should just be accepted as a part of the community, with a system of totally open borders, to keep the economy running the way you like? That's cool. Surely you wouldn't support political parties that demonize fellow human beings seeking refuge in your country while trivializing alien invaders which have thus far killed 41,902 of your national compatriots. I mean, only common sense would tell you that this is utter hypocrisy, right?
Sense is a horribly complicated mechanism, and I don't think we quite agree on how common it is.