Elizabeth Warren's campaign ended last week, and any of her staffers and supporters have been open about their grief. Some, however, may have taken it a step too far.

This morning, Twitter was facepalming at a few former Warren staffers who got matching tattoos. The tattoos read #B7E4CF, which is the Hex color code for Liberty Green, a color used as the theme for the Warren campaign. The tattoos appear handwritten and have been placed on the staffers' inner arm.

If a tattoo that is a combination of handwritten letters and numbers on the arm sounds familiar to you, you're not alone. You're probably thinking of something like this:

That is a holocaust tattoo, a handwritten combination of letters and numbers that appear on the arm. Many were extremely quick to point this out.

The final form of white feminism is accidentally getting a holocaust tattoo for Liz Warren. It’s also the final horsemen of the apocalypse

— Krispy Scream (@mitchysuch) March 10, 2020

Okay, 2020 is over. Nobody is going to be able to top “Liz Warren Auschwitz tattoo”. Sorry, folks, thanks for playing. https://t.co/Wl1ilDhzO5

— Cameron (@ceejayqueue) March 10, 2020

I imagine this tattoo was done in the heat of a very emotional week, perhaps not the time one is thinking of historical context. Given its similarity to Holocaust tattoos, I'd recommend covering it up after it heals, perhaps with a rectangular block in the same color

— David Grossman (@davidgross_man) March 10, 2020

Working on the Warren campaign was one of the best experiences of my life. Flying in planes, making smoking hot bar graph charts!

That's why I got this tattoo permanently etched onto my body! I'll never regret this! pic.twitter.com/QJQgS8QFPM

— Jon Bershad (@JonBershad) March 10, 2020

Haven’t been on twitter in a few days & log back in to see Warren staffers are getting holocaust tattoos?? Think I’m gonna just slowly walk backwards outta here for another few days, bye

— maple cocaine (@maplecocaine) March 10, 2020

At least some were more charitable than others?

in fairness to the warren staffers, it would have been a really cool tattoo idea if the holocaust hadn't happened

— Jaya Sundaresh (@shutupjaya) March 10, 2020

Eventually, Raquel Breternitz, the staffer pictured above, apologized and said she would take steps to modify the tattoo.

Thanks to all who called me on this. I do not want to evoke or make light of the Holocaust. I apologise for missing the mark. I am here to listen and will strive to be better at living in solidarity with my Jewish friends. I'm sorry, and I will take steps to modify the tattoo.

— Raquel Breternitz ❦ 🩸🦷🌹 (@RaquelDesigns) March 10, 2020