Californian woman Rebecca Mankey goes missing after threatening Trump supporter

A woman who confronted a man wearing a Make America Great Again hat in a Starbucks then threatened him on Facebook has been reported missing by police.

Rebecca Parker Mankey, 46, lost her job and received death threats following the public outburst on April 5.

The Lake County Sheriff's Office in northern California is now searching for Mankey after she failed to return to her Palo Alto home after a trip to the lakeside area.

Police were able to trace her cellphone to Aberdeen, Washington, on Friday morning (local time), but no further activity has been recorded.

Mankey made headlines after calling the proud Trump supporter in her town a racist and a Nazi before asking the community to rally behind her.

"Anybody in Palo Alto know this freak? He was sitting in Starbucks. I think he lives in Palo Alto. He will never forget me and will think seriously about wearing that hat in my town ever again," a Facebook post that has since been deleted read, according to NBC News.

"If you see him in this hat please confront him. You do not want to be the person who didn't speak up as we slipped into fascism."

She then commented on the post that she was going to stand outside the man's workplace and "make him feel as unsafe as he made every brown person he met today."

Mankey was subsequently fired from her job at a music store and left a political organisation she was working for.

Newshub.