What are the roles of social taboos in both stories "The Fall of the House of Usher" and "The Minister's Black Veil"?

A taboo is
defined as a forbidden or prohibited practice. Sometimes, social conventions also prohibit
connections with certain places, people, or things. These elements are considered taboo, like
those in the two stories you mention.

In The Fall of the House of
Usher, the social taboo in question is incest, and in , the
social taboo is the collective sin of a congregation. In both stories, the taboos are only
hinted at. In The Fall of the House of Usher , Poe highlights Roderick's
obsession with the house and his fate. The Usher genetic line faces extinction because the
incestuous connection that preserves the union of family members and protects the vulnerable
Self against the encroachment of Others is disintegrating ("...very remarkable fact, that
the stem of the Usher race, all time-honoured as it was, had put forth, at no period, any
enduring branch..."). Poe uses the social taboo of incest to explore how sexual perversion
protects the dysfunctional reciprocity...

href="https://www.eapoe.org/pstudies/ps1970/p1977201.htm">https://www.eapoe.org/pstudies/ps1970/p1977201.htm