Why wouldn't we want to know whether the founders had slaved or not only because it might give us a sad? Wingnuts today truly are the modern day Nonothings.
It isn't the fact that people know or don't know. Every history book in the United States mentions slavery up and down so ignorance of the issue isn't a issue at all. It is the fact a minor thing is blown way out of proportion in order to condemn the United States of America at every turn.
Slavery was a minor thing?
Yes because the number of slaves owned in those days was not as much as it was later on. It was a non-issue to most people because it was just assumed it would die out. It still is a non-issue so when someone says America should pay for its sins of slavery I can honeslty tell you I don't give a shit if a few slaves were over here.
It wasn't a non-issue if you were a slave and the fact that slavery was legal is of not small matter as it determined that some human beings simply weren't 'men'.
Now, to talk about our forefathers owning slaves is not to ignore all the good they did. As much as anything that they weren't perfect and this wasn't a perfect union. As a country we have a history of working through these things, working together with all sorts of good and injustices being done. It's important to acknowledge the full picture.