Fans are convinced the World Cup is "rigged" for Brazil, who they claim are getting "special tournament".
The Selecao trounced South Korea 4-1 in the round of 16 clash at Stadium 974, where they blew their opponents away in a devastating first-half display.
Vinicius Jr, Neymar, Richarlison and Lucas Paqueta were all on target as the Samba stars ran riot and sent out a statement to the rest of the competition.
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The football on display was of the highest quality and South Korea's approach of trying to go toe-to-toe with Tite's side backfired completely.
But still, some fans were furious with the first-half penalty awarded for a soft foul on Richarlison, who made a meal of the challenge from Jung Woo-young.
Neymar, with his usual run-up, coolly converted the penalty upon his return to the starting XI after missing the last two games through injury.
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Yet there was an angry reaction from rival supporters on social media.
One fan wrote: "World Cup is rigged for Brazil because they got washed so many times in big games because how the hell is that a penalty??"
A second added: "That is never a penalty looool this s*** rigged af Brazil been getting some dodgy decisions all tournament…"
A third commented: "You made a huge mistake there @FIFAWorldCup an absolute joke of a penalty awarded to Brazil. Clearly rigged."
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A fourth opined: "Why Brazil getting special treatment and winning?? This World Cup is rigged!"
A fifth weighed in: "This is so rigged wtf brazil did NOT deserve that penalty."
While the penalty was controversial, Richarlison's third goal of the tournament was anything but that.
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The Spurs striker went full Joga Bonito by dribbling with his head and then finished off a glorious move involving Brazil centre-backs Marquinhos and Thiago Silva.
The latter supplied a gorgeous pass in behind for Richarlison to finish emphatically. Paqueta added the fourth before Paik Seung-ho grabbed a consolation in the second half.
Brazil take on Croatia in the quarter-final on Friday at the Education City Stadium as they look to take another step towards a sixth World Cup.
Topics: Brazil, South Korea, Football World Cup