There are few more embarrassing things in the closet for a Conservative politician than having once called Nelson Mandela a terrorist.
It was a phrase that muddied the legacy of Margaret Thatcher and Ronald Reagan.
In 2006, David Cameron apologised and denounced Thatcher's policies, saying she was wrong to have branded Mandela's African National Congress as 'terrorists' and to have opposed sanctions against the apartheid South Africa.
It was, embarrassingly, only in 2008, that Mandela was removed from the US terrorism watch list by President George W Bush.
But on Twitter, less than an hour after President Jacob Zuma announced Mandela's death, aged 95, it seems some people still haven't quite got the memo.
One of them was Alexandra Swann, a prominent young Ukip activists who defected from the Tories.
Mandela is dead. Sympathy for his family but let's not deify one who condoned terrorism— AlexandraLenin Swann (@AlexandralSwann) December 5, 2013
@SeannSykes planning explosions in civilian areas? Terrorism regardless of cause— AlexandraLenin Swann (@AlexandralSwann) December 5, 2013
But she wasn't the only one tweeting insults..
The amount of sheep saying 'RIP Mandela' is nauseating. Do your research and you'll see he was terrorist scum. #wr— sамsкıч #wr (@Partisan24) December 5, 2013
Same applies here as it does on FB.anyone who posts how great Nelson Mandela was will automatically be blocked.the man was a terrorist.FACT!— Lee Harris (@_LeeHarris) December 5, 2013
I wonder how much the Mandela obits will say about his past as a terrorist.— Peter Bright (@DrPizza) December 5, 2013
Nelson Mandela founded a militant antiapartheid group and led a bombing campaign against the Apartheid Government. just saying.— SWAG KING VIVIAN (@perlucidum) December 5, 2013
The British National Party leader Nick Griffin, sparked outrage earlier this year, as Mandela's health worsened, calling him a "murderous old terrorist".
Mandela is a hero, Griffin is a worthless racist. pic.twitter.com/QOhAjevT2n— Matthew Vickery (@MMVickery) June 9, 2013
He stayed true to form on Friday morning.
When #Ghandi's people used violence he went on hunger strike to stop it. Mandela never once even spoke v his wife's support 4 necklacing.— Nick Griffin MEP (@nickgriffinmep) December 6, 2013
And on Thursday night, some of the tweets most clearly came from nationalist or sectarian social media users.
BREAKING NEWS : South African terrorist dead. #mandela— New Nationalist (@New_Nationalist) December 5, 2013
Still, at least they knew who he was...
who the heck is nelson mandela— yung J (@JaayThorne) December 5, 2013