C.S. Lewis observed that those who confess to communal sins don’t seek to reveal their own sins but their neighbors.

Likewise, Leftist who apologize for past sins don’t see themselves for apologizing for the sins of their ideological forbearers but rather as apologizing for the sins of the forbearers of their ideological competitors. Apologies for historical wrongs are nothing but a means of turning historical wrongs (real or imagined) into weapons against their present day opponents.

Like more things Leftist do, its an intensely selfish and self-serving act that benefits no one but a few power crazed articulate intellectuals and their wanna be followers.