Maybe you guys can clear this up for me....what exactly are you disagreeing with? That colonists persecuted people from other religions/denominations? That slavery was the law of the land and widely practiced? That sexual and racial discrimination and Antisemitism has been prominent in much of US history? That at one time Catholics were banned from holding office? That Native Americans were deliberately killed to make way for the European settlers?
Or are you arguing that "those were the good ol' days"? Help me out.
I think it boils down to this - we don't really disagree with what has happened in our history - we are putting different values of importance on them - we need to separate out what was/is sinful and what was/is due to economics, social factors etc - example - river jordan said this -- "I'm looking back to an age where I couldn't vote, could be put into debtor's prison, couldn't marry outside my race, had to have 10 kids to get 4 to adulthood, etc. and thinking of them as "better times".--- these things have nothing to do with sin but I understand what he is saying - It's just that all that is important is if God judges our country growing in sin because a higher percentage of each generation has rejected him and embraces sin as being their "right of freedom". This is all that's important and what will/will not cause God to intervene not only in America but the world.