IMO, you really want to be able to consider all of humanity to be part of your ingroup. No matter how small your ingroup is, the members aren't all clones of e

IMO, you really want to be able to consider all of humanity to be part of your ingroup. No matter how small your ingroup is, the members aren't all clones of each other. They have differences in how they were raised by their parents, and in some of the things they think. Differences are not automatic deal-breakers for your ingroup. So, if one works hard enough, it should be possible to consider everyone part of your ingroup. You may want to change some people's minds on some things, but that doesn't mean you have to consider them "the other".