It’s the only way they’ve been taught to deal with things they disagree with/dislike/don’t know, understand/etc. Generations of terrible education and cultural insulation with these beliefs will do that. Travel abroad programs should be mandatory during some year of high school, and it should be federally funded.
Unless the objective is to get them incarcerated in foreign prisons, then there's some ground work which needs done before we get to mandatory travel abroad.