Tensions were always going to be running high in Tottenham's FA Cup clash with Millwall.
White Hart Lane's final cup game before its demolition was marked by a massive police presence, with stewards in the away end forced to wear hard hats.
Sadly, while the game passed without any major violence, the attacks from the Millwall fans were verbal and came in the form of racist abuse directed at Heung-Min Son.
The South Korean responded by silencing them with a hat-trick to help Spurs to a 6-0 win.
Christian Eriksen, Dele Alli, and Vincent Janssen also netted to put the Lilywhites into the hat for the last four.
Millwall lived up to their famous chant of "no-one likes us" perfectly, issuing a reminder of the reputation the club have been trying so hard to lose.
And while the Metropolitan police will be relieved that they managed to maintain the situation outside the ground, a video of one incident has been doing the rounds on social media.
Such an unnecessary reaction...
Two Spurs fans were basking in the glory of reaching the semi-finals and were admittedly provoking the Millwall fans with their chanting, but they probably weren't expecting this reaction - especially with a police van right next to them. If only the League One side had shown that much fight on the pitch.
Take a look:
The video has gone viral and has prompted quite the reaction:
According to the Telegraph, Millwall are now set to be investigated for the chanting aimed at Son, but it remains to be seen what, if anything, will happen to the gentleman in the video.
Spurs go through in style
The Met police have confirmed, per the Daily Mail, that they are investigating after the clip was brought to their attention.
Two arrests were made on the day for public order offences relating to threatening behaviour or an intention to provoke violence.
For the unfortunate Spurs fan who had to dust himself down, he can at least look forward to facing either Manchester City, Arsenal, or either Chelsea or Manchester United at Wembley next month.
The only other disappointment for Spurs was the sight of Harry Kane limping off in the 10th minute with what looked like a recurrence of the ankle injury that kept him out for almost two months earlier in the season.
Will Spurs win the FA Cup? Have your say in the comments.
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