There's no 'better yet'. If you really believe that slavery imparted some skills to slaves and thusly slavery was beneficial to SLAVES, then you're the one who needs to test that shit with some people who, if they don't get up from the table you're sitting at with them, MAY have a different view of matters.

Also, if that shit is NOW about to be in the curriculum why wasn't it when all of your schools, and lunch counters and motels and drinking fountains, were segregated? Should have been an easy 'sell'.