Okay, I am the OP, and I will answer your questions. Progressives were unequivocally on the right side of history when it comes to slavery. Conservatives at the time (who I in no way want to equate to conservatives today) wanted to conserve the institution of slavery, and Progressives at the time wanted to progress past slavery. Progressives were also on the right side of history during the civil rights era. I am just unsure if they will be on the right side of history on the current era we're living in.