Director Spike Lee is slamming Quentin Tarantino controversial new film, Django Unchained. The film has come under fire by members of the African-American community for its repeated use of the “n” word, but Spike’s anger stems from the film’s take on one of America’s darkest times: slavery.

“American slavery was not a Sergio Leone Spaghetti Western. It was a holocaust. My ancestors are slaves stolen from Africa. I will honor them,” Spike tweeted.

That being said, Spike admits he hasn’t seen the film. ”I cant speak on it cause I’m not gonna see it,” Lee said in an interview with VIBETV.” All I’m going to say is that it’s disrespectful to my ancestors. That’s just me…I’m not speaking on behalf of anybody else.”

Django Unchained stars Jamie Foxx and Leonardo DiCaprio and opens in theaters on Christmas Day.