"Django Unchained" is a western film based on how a South American slave and bounty hunter travel together to kill their enemy. But the Lee says it has offended him, Huffington Post reported.
"I can't speak on it because I am not going to see it ... All I am going to say is that it is disrespectful to my ancestors. That is just me. I am not speaking on behalf of anybody else," Lee said.
Later, the filmmaker wrote on Twitter, "American slavery was not a Sergio Leone spaghetti western. It was a holocaust. My ancestors are slaves. Stolen from Africa. I will honour them."
"Django Unchained" stars Jamie Foxx, Leonardo DiCaprio and Christoph Waltz.