If it were Sir Winston Churchill, I'd applaud and give a 
I'm not a fan of FDR, not in the least bit.
Why does it matter? Why not give it a thumbs up? Because of his politics? Because you dont like the policies he had? IF he were the current or very recent POTUS. It might mean something. But now. Those are entirely stupid reasons.
Its a piece of history
Would it really matter if the 3 cornered hat Mbaily found was American or British? Would one make it any of a cooler find then the other?
Would you have made the same comment if it was a picture of Hitler? Or would you have said "Wow. cool find"? Or dont you think Hitlers policies or politics were worse then FDRs?
What if it were a bullwhip who's original ownership can be traced back to a plantation owner in say 1840?
As horrible of things that that whip would have stood for. We still would have recognized the history behind it and said "Wow. cool find".
Those things would have been

because of their historical significance. Not because of what or if we agreed with what those people stood for