Producer Brian Grazer Didn't Learn Chris Hemsworth's Lesson About Native American Costumes

Another important mental note: blackface is never cool, either.

Despite so many other stars who have faced backlash in the past for wearing culturally insensitive costumes (Julianne Hough, Hillary Duff, Colton Haynes, Ashley Benson and Paris Hilton to name a few), Grazer must have thought his Native American headdress would crush it on the Hollywood Halloween party circuit this weekend.

The filmmaker enthusiastically shared his costume on Instagram Friday morning with the caption, "Getting ready for Halloween... what do you think?!"

Actress Rita Wilson, who is also Tom Hanks' wife, commented, "Cultural appropriation, perhaps?"

Here are a few of the answers from the comment section:

"Not cool."

"Not woke. If you plan on going as a total douche - you have the right costume!"

"Nooooooooo."

"Take the headdress off - that'll give you a vast improvement and prevent others from making racist comments on the thread. Appropriating Native culture and trivializing the genocide that took place in the USA is never ok. You missed all the Halloween memos."

"Bro, you know better than this."

And Grazer really should know better, not only because he's an intelligent man responsible for some incredible movies, but also because Chris Hemsworth -- who starred in two Grazer movies, "Rush" and "In the Heart of the Sea" -- apologized exactly a year ago for wearing a similar getup to a costume party.

"Last New Year's Eve I was at a Lone Ranger-themed party where some of us, myself included, wore the traditional dress of First Nations people," Hemsworth wrote on Instagram on October 27, 2016 while expressing his support for Native Americans during the Standing Rock protests. "I was stupidly unaware of the offense this may have caused and the sensitivity around this issue. I sincerely and unreservedly apologize to all First Nations people for this thoughtless action."

Apparently, Hemsworth's ignorance was not highlighted clear enough for Grazer to see. Gaze upon Grazer's bad idea, in full, below: