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Arguments between opposition football fans are are a regular occurrence. You are always going to have disagreements in the build-up to games, during and then after. It's all part and parcel of being a supporter.
However, there probably aren't many occasions when a debate gets so vitriolic that someone's house ends up getting burned down - but then again not many rivalries compare to Boca Juniors and River Plate.
The 'Superclasico' is not only the biggest game in Argentina, it's up there as one of most intense games in world football.
This year, for the first time ever, the monumental clash will see the two come up against one another in the Copa Libertadores final (effectively South America's equivalent of the Champions League).
Boca Juniors and River Plate will be playing Copa Libertadores final.- Erastusjr (@erastusgachez) November 1, 2018
The most important club football game of the year, if you don't know these teams and Copa Libertadores stop considering yourself a football fan. pic.twitter.com/TZccY6Jn9z
And ahead of the match, a house genuinely got burned down after one fan from each team over in Misiones had a bit of beef and it ended in one blazing the other's home because obviously that's the only logical end result.
This crazy story has come about prior to the two legs so there could well be further madness ensuing depending on how the result plays out.
But remarkably, this isn't the most devastating story when two football supporters have had different opinions.
In 2016, the debate over who the better player is out of Lionel Messi and Cristiano Ronaldo took very dark turn after a Ronaldo fan killed a Messi fan allegedly over a debate about the pair.
The incident happened in Nigeria where Obinna Michael Durumchukwa and Nwabu Chukwuma got into an argument about which player was better whilst at Durumchukwa's birthday party.
The report in the Hindustan Times says that "Durumchukwa flung a glass at Chukwuma" whilst they argued over the merits of the two footballing superstars. The glass missed it's intended target and smashed against a wall.
Chukwuma then picked up some of the shattered glass and attacked his friend, stabbing him in his neck in the process, according to police inspector Kiran Kabadi.
Durumchukwa was arguing the merits of Messi, who bagged two goals at the weekend, whilst Chukwuma was on the side of Ronaldo