The Oscar nominee accepted best actress at the African American Film Critics Association Awards.
McDormand says in her Wednesday speech that this was an event she wanted to attend; she skipped the annual Oscar nominees luncheon earlier this week.
She also says she's tired of patting herself on the back and the self-congratulatory nature of awards season.
Other honorees included Jordan Peele, who won best director and picture for "Get Out"; Daniel Kaluuya won for best actor.
Director and liberal activist Rob Reiner received an award for social justice.
Ava DuVernay and the cast of "Queen Sugar" won best drama series.
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