Democratic presidential candidate Hillary Clinton is under fire after inserting Rosa Parks into her campaign logo on the anniversary of Parks' 1955 arrest for refusing to give her bus seat to a white person.

Clinton's logo, which usually features the letter H with an arrow going through it, depicted a woman sitting appearing to be Parks, sitting on what some social media users are calling the back of an H-shaped bus.

The public outrage came on Tuesday as Clinton spoke at an event in Alabama marking the boycott of Montgomery buses by black Americans to protest segregated seating.

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Democratic presidential candidate Hillary Clinton was criticized on social media on Tuesday after creating a campaign logo to commemorate the anniversary of Rosa Parks' December 1, 1955, arrest

Clinton's campaign logo featured what appeared to be Parks sitting on what some social media users considered the back of an H-shaped bus

Clinton started her day with a tweet in which she reflected on Parks' legacy.

'History often gets made on ordinary days by seemingly ordinary people—December 1, 1955 was one of them. Thank you, Rosa Parks. -H,' she wrote.

But critics on social media still criticized Clinton's decision to change her campaign logo for the day, calling it 'disrespectful' and 'terrible', and some even considered it appropriation.

'How utterly disrespectful of you to place Rosa Parks in your campaign logo. It reeks of commodification and appropriation. @HillaryClinton,' Twitter user BrownBlaze wrote.

'Hillary gotta fire whoever threw Rosa Parks on the logo. Gotta do it tonight,' Twitter user Hanif Abdurraqib wrote.

Parks, pictured right in 1956, was arrested on December 1, 1955, in Alabama after refusing to give her bus seat to a white person

'No one on @HillaryClinton's team suggested that the addition of Rosa Parks was a TERRIBLE, AWFUL idea?,' tweeted Kimberly Reese.

'Rose and her legacy are both above this. Nah. I'm not feeling it for *any* candidate,' Twitter user Brittany Packnett wrote.

'.@HillaryClinton, don't compare yourself to Rosa Parks. She's done more for racial equality than your political dynasty ever has,' CJ Pearson wrote on Twitter.

Some social media users were pleased with the logo, however, even celebrating it's design.

'Can we please talk about how amazing the @HillaryClinton logos have been lately?! Check out the Rosa Parks version,' Sarah J Galvez wrote on Twitter.

Clinton's campaign has not responded to the backlash, according to Mashable.

But while speaking at the predominately black Dexter Avenue King Baptist Church in Montgomery, the Democratic frontrunner spoke about Parks and the civil rights movement.

'It's always struck me how, depending on the way you look at it, Rosa Parks either did something tremendous or something rather humble,' she said, noting that history is often made with an ordinary act 'by seemingly ordinary people doing something extraordinary.'

She said the United States needed to address mass incarceration and gun violence in the nation.

'We must be honest about the larger and deeper inequalities that continue to exist across our country,' Clinton said. 'Our work isn't finished. We must pay it forward.'