This is not the best way to mark the anniversary of a landmark civil rights moment.

In a tweet acknowledging the 51st anniversary of what has become known as "Bloody Sunday," Bernie Sanders' campaign Twitter account tweeted out a photo not of the events — a turning point of the civil rights movement — but instead of a scene from the recent movie Selma.

The tweet, one in a series marking the anniversary of the march, has since been deleted. Screenshots though, have been shared on Twitter, and the tweet was preserved by Politwoops.

Here is that since-deleted @BernieSanders "Bloody Sunday" tweet, complete with image from the film SELMA. pic.twitter.com/CIxaVRbqKx — Jamil Smith (@JamilSmith) March 7, 2016

Sanders was one of more than 100 members of Congress who traveled to Selma last year to mark the 50th anniversary of Bloody Sunday, when peaceful protesters trying to cross a bridge were beaten by police officers, an event that led to passage of the Voting Rights Act of 1965.

Bloody Sunday, March 7, 1965, was a day of horror and pain. But it was also a day of resilience and grace. #Selma51 -H — Hillary Clinton (@HillaryClinton) March 7, 2016





Both Sanders and Democratic rival Hillary Clinton are campaigning for the votes of black Americans. While Sanders has cut into Clinton's support among young voters and white voters, Clinton has carried black voters by large margins, according to exit polls.

The Sanders' campaign's Twitter gaffe comes one day after he caused a stir during Sunday's Democratic presidential debate in Flint, Michigan, after Sanders and Clinton were each asked about racial blind spots.

In his response, Sanders discussed friends who were discriminated against decades ago, as well as of today's Black Lives Matter movement.

"When you’re white, you don’t know what it’s like to be living in a ghetto, you don’t know what it’s like to be poor," he said. "You don’t know what it’s like to be hassled when you walk down the street or get dragged out of a car."

Many, including those unaffiliated with Clinton's campaign, suggested that Sanders' comments suggested that there were no poor whites and no non-poor blacks in America.

Not sure how the Sanders line that white people in America "don't know what it's like to live in the ghetto" will land. #DemDebate — Joy Reid (@JoyAnnReid) March 7, 2016

Sanders' line about how white people don't know what it's like to be poor seems offensive to both non-whites and poor white people. — Josh Barro (@jbarro) March 7, 2016

What was interesting about the #MyRacialBlindspot question is that Bernie then went on to demonstrate his racial blindspots. #DemDebate — Zerlina Maxwell (@ZerlinaMaxwell) March 7, 2016

Sanders clarified his remarks on Monday, telling reporters in Detroit that "when you talk about ghettos, traditionally what you're talking about is African-American communities."

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