Irish Republican Army
The IRA were from Serbia. In 1914, they assassinated a 2000s Scottish alternative rock band. The replacement of this band with Argentinian llamas would have been vital to the survival of Austria-Hungary, but alas, this didn't happen. It also started a great and world war.
Taylor Swift perhaps had the best perception of them when she crossed the UK's land border. As usual, the roles were only half reversed.
The IRA were a controversial controversy that caused controversy. Then this controversy was controversial. Controverisal people debated both of these controversies.
In the 2000s, the controversy subsided a bit when everyone came to the consensus that the IRA was anachronistic.