Boos at Anfield. Not often you can say that at the full-time whistle. There were a few sticking their heads above the parapet after a turgid 4-1 defeat by PSV Eindhoven, but this felt different.
This is a game that Liverpool were in, in until the very end, but people didn't care. Even at 1-0, before Tottenham's equaliser and supporters streaming out, it felt different.
The crowd was flat, not nervous, not buoyant, flat. Your football team can make you feel many things, apathy shouldn't be one of them.
Compare that with another game Richarlison played at Anfield. Liverpool's 1-0 win over Everton in 2019. Nobody moved at 0-0, things were nervy, yes, but the people knew there was a chance. Now the believers have become riddled with anxiety.
In times like these, the manager has to take the spotlight, sink or swim. Here is what Liverpool should do about Arne Slot's Liverpool future.
Liverpool's season
To say Liverpool's season has been underwhelming is something of an understatement. Liverpool have been desperately poor.
Their record against the bottom seven in the league is not good enough. Six wins in 13 matches, winning less than half your games against the bottom seven tells you a story, and that is the manager doesn't deserve to keep his job.
Even anecdotally, on Sunday and in games in general, Liverpool look impotent, unable to crank up the pressure on the worst form team in the Premier League.
Liverpool are caught between stools, on one hand is the logic of the home team, the better team wanting to push and finish Spurs off, on the other is the acceptance that Liverpool aren't that good, and the 'control' Slot has strove to implement.
It is a far cry from the days of Klopp, where Liverpool would press the life out of a team. Make no mistake it wasn't always perfect, but you knew what the game was.
Against Manchester United earlier in the season, Liverpool equalised with a decent amount of time left. The visitors were woeful, they couldn't string passes together, yet Liverpool were unable or unwilling to put United under pressure.
Like Sunday, Liverpool left the door open and the visitors grabbed a late goal. When you leave games to chance, there are always going to be times when it slips away from you.
Liverpool's mitigating circumstances
We all know by now that this has not been a normal season for Liverpool. Slot dealt with immense tragedy superbly.
Liverpool have too had a series of injuries, but not to the extent whereby you would expect the team's form to dip this much.
I think visibly, the biggest factor is the lack of depth and limited utility of the players he has at hand. This has been a huge shortcoming by Richard Hughes and Michael Edwards, and has set the team up for failure.
This never happened to this extent in Edwards's previous ten years at the club. They have to take some responsibility for a farce that they should have foreseen.
With that being said, this is a team that was expected to compete for the league title and it is going to land nowhere near, and for that, the manager has to take some responsibility.
Liverpool need to be better, but the question is how to achieve that.
What does Liverpool's future hold?
For Arne Slot it seems as though time is fast running out. The number of games left in the season are quickly evaporating and so is the confidence of the fans.
I think Sunday represented a number of people that have been convinced that he is no longer the man to lead this team forward, and very few managers win that trust back when it is in such dire straights.
It seems unlikely that Liverpool would make a change now, but I think Liverpool would be missing a trick if they weren't tapping up Xabi Alonso ready for the summer.
Arne Slot did a fantastic job last season at tweaking a good time and providing a platform for Liverpool to win a second Premier League title in 35 years.
However, it remains to be seen whether Slot can navigate an on-field crisis. Right now, Liverpool's season is sinking fast and a win in midweek may only paper over the cracks.
If Arne Slot is going to save his job, it has to happen now.