Cancelling Abraham Lincoln

San Francisco school board voted to rename a bunch of schools to remove the names of George Washington, Abraham Lincoln, Thomas Jefferson, and more.  Abraham Lincoln??  The man who signed the Emancipation Proclamation that freed the slaves.  And followed up by winning the Civil War to make the Emancipation Proclamation stick?  George Washington who beat the Redcoats in the Revolutionary War, chaired the Constitutional Convention, and served as our first president.  Without Washington we would still be a bunch of British colonies.  Jefferson, the man who wrote the Declaration of Independence, " all men are created equal".  They want to cancel all these heroes of American history??  What kind of education do these crazies offer to the children of San Francisco??