Boston Red Sox star J.D. Martinez stood by his controversial Instagram post showing Adolf Hitler, saying Tuesday he was defending the Second Amendment. Martinez, a perennial American League MVP candidate, posted the photo in 2013. The picture featured Hitler along with the quote, “To conquer a nation, first disarm it’s (sic) citizens.” Martinez captioned the post, “This is why I always stay strapped! #thetruth” He was 25 at the time.