When going through group identity formation some groups distance themselves from other groups to better define their own boundary and thus their identity. "We'r

When going through group identity formation some groups distance themselves from other groups to better define their own boundary and thus their identity. "We're not those icky|stupid|smart-ass|ETC guys". This often goes hand-in-hand with fears of oppression and the like. The particulars of ETC part are not strictly logical and instead are designed to appeal on the emotional level.