I think the true answer is that we need to apply nuance and context to things instead of emotional knee-jerking. At the same time we should judge for past in both positive and negative ways.
If they supported apartheid for fear of communism then you certainly are right to question their moral and practical judgment (even accepting the fear the action is counterproductively shoving the oppressed to the arms of the enemy). If they made racist jokes but moved on and supported civil rights for all let it lie.
It brought to mind one thing from a parent referring to someone as being a radical liberal for supporting gay marriage in the 1980s. Now their view is throughly vindicated - visionary not radical is the appropriate term.
If they supported apartheid for fear of communism then you certainly are right to question their moral and practical judgment (even accepting the fear the action is counterproductively shoving the oppressed to the arms of the enemy). If they made racist jokes but moved on and supported civil rights for all let it lie.
It brought to mind one thing from a parent referring to someone as being a radical liberal for supporting gay marriage in the 1980s. Now their view is throughly vindicated - visionary not radical is the appropriate term.