Roseanne Barr is deservedly facing a storm of backlash after her abhorrent tweet directed towards a former aide to the Obama Presidency, Valerie Jarrett. Her show has been cancelled and her credibility has been ruined.

However, she is not the first celebrity to become their own worst enemy due to how they behave on social media. There are more than just a few others who have slipped up in that regard.

Here are some examples…

Azealia Banks

The controversial rapper faced repercussions after tweeting One Direction star Zayn Malik racist and homophobic insults. She later apologised for the homophobic slurs, but the damage was done.

Ten Walls

The DJ found himself at the centre of a social media storm after spreading hateful comments about the LGBT community on Facebook. His comments saw him dropped from major festivals including Creamfields and Sonar.

The Lithuanian musician, whose real name is Marijus Adomaitis, later apologised, stating: "I'm really sorry about its insulting content which does not reflect my true opinion. I hope this misunderstanding will not provoke any more thoughts and opinions. Peace."

PewDiePie

The Youtube star has a slew of incidents which have not endeared him to people online. He used the n-word and he has also made anti-Semitic jokes. PewDiePie, whose real name is Felix Kjellberg, was one of the most popular Youtube stars on the planet. However, there is now a general haze of what Kjellberg’s real politics are.

James Franco

Back in 2014, Franco’s Instagram messages to a 17-year-old fan were all over the net.

In them, Franco was asking this fan if she could “rent a room”. Franco later explained himself on Live! With Kelly and Michael, by stating: "I'm embarrassed, and I guess I'm just a model of how social media is tricky. It’s the way that people meet each other today, but what I've learned — I guess because I'm new to it — is you don't know who's on the other end."

Zac Efron

The High School musical star made a bit of a fool out of himself, by tweeting the following on Martin Luther King Jr. Day in 2016: "I'm grateful for a couple things today. Martin Luther King Jr & 10 million followers on IG." Although not as extreme as some of the other examples on this list, many still viewed his comments as insensitive and crass.

The star later apologised.