Ad Frominem: Closely related to Ad Hominem, Ad Frominem is the act of trying to dismiss a concept by noting that it comes from somewhere else. e.g “Human rights are a Western construct and not relevant here.” Or, “Dissent is un-American.”
Ad Frominems are frequently used and thoroughly wrong-headed. Frequently used, one presumes, because they are an effective means of mustering nationalistic sentiment to stifle debate. Thoroughly wrong-headed because concepts are right or wrong because they are right or wrong not because they came from somewhere in particular.