Spike Lee, the director of "BlacKkKlansman," called on Americans to "mobilize" for the 2020 presidential election, implicitly calling on them to vote out President Donald Trump.

Trump responded on Twitter by calling the speech a "racist hit on your President."

Lee won the Oscar for best adapted screenplay for "BlacKkKlansman," which overtly linked the Trump administration to racism and the KKK in early 1970s America.

President Donald Trump accused the director Spike Lee of launching a "racist hit on your President" at Sunday night's Academy Awards over an acceptance speech in which Lee called on Americans to "mobilize" and "be on the right side of history."

"The 2020 presidential election is around the corner," Lee told the Oscars audience. "Let's all mobilize — let's all be on the right side of history.

"Make the moral choice between love versus hate. Let's do the right thing," he added, without mentioning Trump's name.

Watch the speech below.

Trump responded in a Monday-morning tweet: "Be nice if Spike Lee could read his notes, or better yet not have to use notes at all, when doing his racist hit on your President, who has done more for African Americans (Criminal Justice Reform, Lowest Unemployment numbers in History, Tax Cuts,etc.) than almost any other Pres!"

It is not clear what in Lee's speech Trump considered racist.

Lee took home an Oscar, his first, for best adapted screenplay for "BlacKkKlansman," which overtly linked the Trump administration to racism and the KKK in early 1970s America.