These people are both vile and stupid. Lee owned few if any slaves in his entire lifetime. Sidney Lanier is (or used to be) hailed as one of America's greatest literary voices. Ralph waldo Emerson regularly repeated hi ‘Ode to the Confederate Dead’ at his public readings. Those who wish to dishonor their or others noble ancestors are themselves evil and merit only contempt.
Lee didn’t own any slaves. His wife inherited some from her father - just like Grant’s wife inherited some slaves from her father. Lee was the executor of his father in law’s will which called for all the slaves he passed down to his daughter to be emancipated once Arlington’s debts were paid off in a few years which is exactly what happened. Lee executed the will and freed all the slaves as the will called for.
Of course just as one would expect from PC Revisionists, they are massively historically ignorant and filled with hate for Southerners.