Hate inflames on both sides of a wall regardless of who builds it.
Walls generate division, exclusiveness, and strife. Minorities more than the majority are keenly sensitive to the detriments and ills of a wall. It is historically evident that no sustainable good will ever come from building a wall.
Walls kill, not on one side, but on both sides. History is replete with people and nations falling into a tempting mirage of wall building. Let’s hope that the “shining city on the hill”, America, avoids this fate.