In group decision-making, a form of tunnel vision develops in which there is only one "right" viewpoint and suggested alternatives are perceived as signs of disloyalty. This is called .

This is called groupthink.

Explanation:

Groupthink is a psychological phenomenon in which a dysfunctional and irrational outcome occurs because there is no individual thinking or creativity because the members of a group tend to conform to forma consensus.

This develops into a tunnel vision of only seeing one aspect as the right viewpoint and anything different is considered as disloyal, just as the example states.

well it depends i think people around the world are coming around to gay marriage. but if you are talking abortion then wow, so much to talk about. such as men thinking they have the right to choose if women can, the fact there are health concerns if the women can't get one, and many more arguments to discuss. so i would definitely say abortion would be a much more interesting topic.