Atletico Madrid did not stay silent after Real Madrid’s manager, Jose Mourinho, publicly lambasted the officiating crew following Sunday’s fierce derby clash. The Portuguese coach arrived at the post‑match press conference clutching printed sheets that, in his view, demonstrated two clear instances where Atletico players should have been shown red cards. Mourinho’s accusations centered on what he described as glaring mistakes that, in his opinion, altered the outcome of a game that ended with Real falling 2-1.

In retaliation, Atletico took to its official X (formerly Twitter) account on Monday with a pair of posts aimed squarely at the criticism. The first tweet featured a short video of a piece of paper being printed with the hashtag "#StopAcosoArbitalYA," a Spanish phrase that translates to "stop referee harassment now." The second post displayed a still of Mourinho at the press conference, overlaid with the same hashtag, making it clear that the club was pushing back against what it saw as unfounded attacks on the match officials. Mourinho’s press conference was a theatrical affair.

He held up photographs of two separate tackles, insisting that both warranted straight red cards. The first incident involved Atletico defender Cristian Romero, who, according to Mourinho, stamped on Jude Bellingham’s knee in a manner that should have resulted in an immediate dismissal.

The second incident concerned a challenge by Lee Kang‑in on Federico Valverde, which Mourinho argued also merited a sending‑off. He emphasized that Real had already been reduced to ten men only five minutes after the break, and suggested that the match could have been dramatically different – perhaps a 50‑minute stretch of eleven‑against‑nine – if the referee had applied the laws correctly.

"We could skip the press conference because the story of the match is right here," Mourinho declared, brandishing the images as he launched into a nearly five‑minute tirade. "Those were two clear red cards. The difficulties we faced after the sending‑off – eleven against ten – we can only imagine what fifty minutes of eleven against nine would have looked like if justice had been done." The match itself unfolded with Real’s defender Dean Huijsen being shown a red card after bringing down Giuliano Simeone inside the penalty area, a decision that allowed Alejandro Grimaldo to convert a low spot‑kick.

Six minutes later, Atletico’s Jonathan David doubled the lead, and later Antonio Rudiger headed in a free‑kick to narrow the margin. While Mourinho praised his squad for what he termed a first half "full of class and great character," his criticism of referee Miguel Ángel Ortiz Arias was relentless. He questioned the appointment of a 41‑year‑old official with no international experience, suggesting that the league’s decision‑makers had erred in selecting him. "They've put a referee, aged 41, with no international experience – it’s certainly not because he’s a great referee," Mourinho said.

He added that the official appeared unable to cope with the "80s‑style pressure" that the stadium generated, a pressure he claimed was rarely seen in modern football. When asked about Real’s six‑point deficit behind Barcelona, Mourinho gave a pointed response: "If they just leave us in peace and let us compete on a level playing field with everyone else, we still have a long way to go." He stopped short of alleging any conspiracy, stating, "I don’t want to go so far as to say this was set up… I want to believe that they simply made a mistake." Real Madrid’s own official match report echoed many of Mourinho’s points, describing the encounter as "marked by poor officiating." The club’s statement singled out Ortiz Arias for failing to dismiss Cristian Romero after a review of the incident where the Atletico defender’s studs landed on Bellingham’s knee. According to Real, the referee initially booked Romero, then, after being prompted by referee supervisor Trujillo Suárez, consulted the monitor and downgraded the sanction to a yellow card instead of a red. Nine minutes later, the report claimed another critical error occurred when Lee Kang‑in’s challenge on Valverde went unpunished, with the referee neither issuing a card nor even acknowledging the foul, despite being in close proximity to the incident.

Both clubs have used the controversy to underline broader concerns about refereeing standards in La Liga. Atletico’s social‑media campaign, with its #StopAcosoArbitalYA slogan, reflects a growing frustration among teams and fans who feel that inconsistent decisions can sway high‑stakes matches. Meanwhile, Real’s narrative focuses on the tangible impact of those decisions – a missed red card that could have reduced Atletico to nine men and potentially altered the tactical dynamics of the second half.

The debate over the two incidents continues to spark discussion among pundits, former referees, and analysts. Some argue that the referee’s hesitation to issue a red card was influenced by the modern emphasis on player safety and the desire to avoid overly punitive measures for challenges that, while reckless, may not meet the strict criteria for a straight dismissal. Others contend that the laws of the game are clear: a deliberate stamp on an opponent’s knee or a studs‑first challenge that endangers the opponent’s ankle should result in an immediate sending‑off, regardless of the match context. In the weeks ahead, La Liga’s refereeing committee is expected to review the match footage and the decisions made by Ortiz Arias.

Whether any disciplinary action will be taken against the official remains uncertain, but the incident has already prompted calls for greater transparency and perhaps a more robust use of video‑assistant referee (VAR) interventions in future derbies. For Atletico fans, the club’s response serves as a rallying cry to defend their side against what they perceive as unfair criticism. For Mourinho and Real Madrid, the episode underscores a broader narrative of feeling aggrieved by officiating decisions that they believe have cost them points in a tightly contested title race.

As the season progresses, both teams will be keen to avoid similar controversies, focusing instead on securing results on the pitch. The derby’s fallout also highlights the emotional intensity that characterizes Madrid’s football rivalry.

With both clubs boasting storied histories and passionate supporter bases, any perceived injustice is amplified, feeding into a cycle of blame and defensive posturing that often spills over into public statements and social‑media campaigns. Ultimately, the incident serves as a reminder of the delicate balance referees must maintain: enforcing the rules decisively while managing the high pressure of a stadium filled with fervent fans. Whether future matches will see clearer, more consistent decisions remains to be seen, but the conversation sparked by this derby will likely influence how officials are assessed and appointed in the remainder of the season.