It appears the movement to erect a monument was initiated by Union veterans-
https://davidblaska.com/2018/04/26/confederate-rest-memorial-stone-meant-to-heal-wounds-of-civil-war/comment-page-1/
But this anti-Confederate craze is driven like a mindless mob. Not sure if reasoning with them will do any good.
"Reserve burial site for perfect people"
http://host.madison.com/wsj/opinion/letters/reserve-burial-site-for-perfect-people----mark/article_07e39a0a-ea16-568d-bf68-528729366864.html