"California Democrat sends Ku Klux Klan pic to Candace Owens. Doesn't go well – I made a terrible mistake," he wrote. "I am officially (resigning) from all my responsibilities within the Democratic Party, and am no longer running for Congress."
"What I did was a display of white privilege," said O'Mara. "I will never know what pain can be experienced by members of our community when faced with images of the Klan like the one I used. Its use, like all discriminatory rhetoric, has no place in our discourse or our society."