Former President Obama took a swipe at America's founders during his presidential museum dedication, highlighting slavery and the constitution's framework.
https://www.foxnews.com/politics/obama-knocks-founders-presidential-center-debut-before-americas-250th-fell-terribly-short
https://www.foxnews.com/politics/obama-knocks-founders-presidential-center-debut-before-americas-250th-fell-terribly-short