Jurgen Klopp has compared the sacking of Claudio Ranieri to Brexit and Donald Trump's election as US president.
The Italian was shown the door at Leicester only nine months after masterminding one of sport's greatest stories as the Foxes won the Premier League and his departure has been met with shock and sadness.
Leicester play their first match without Ranieri against Liverpool in the Premier League on Monday.
Reds boss Klopp said: "What can I say? Am I surprised that things like this can happen? No. It is not only football.
"For me there have been a few strange decisions in 16/17: Brexit, Trump, Ranieri. Do I have to understand it all the time - obviously not. I have no idea why Leicester did this.
"He is a really special person in this business, a really nice guy. I met him before when he visited me at Dortmund and we had a nice talk. He is a wonderful person."
Antonio Conte, a good friend of Ranieri and one of his successors as manager of Chelsea, expressed his disappointment at the decision and will offer his countryman support.
Conte said: "I'm very, very sad, because this is our job and for sure I'm disappointed for him. First, he's a friend. He's a really good man. And he's a really good manager. He reached a dream to win the title.
"I understand the situation. I understand his frustration. For sure I'll call him. It's natural after this type of situation to talk and to show him also my disappointment for this decision."
Gary Lineker has revealed Leicester's "inexplicable" decision reduced him to tears.
The former England striker claimed the Italian's dismissal was a panic-driven move which showed a staggering "lack of gratitude", tarnished the most incredible of Premier League triumphs and would harm the image of Leicester around the world.
Foxes fan and former player Lineker said on Radio 4: "For me I shed a tear last night. I shed a tear for Claudio, I shed for football and I shed a tear for my club.
"I just think it's inexplicable to me and it's inexplicable I think to a lot of football fans who love the game, but I suppose in some ways you can explain it in terms of a panic decision. And for me a wrong decision and it's very sad."
He added: "It's a sign of modern football. What happened last season was pretty extraordinary under Claudio Ranieri and I think the lack of gratitude from the owners of the club - and who knows who else is involved in such a decision - beggars belief.
"For a club like Leicester to win the league last season and the magnificence of that story and the likeability of the club, especially under Claudio Ranieri, the ultimate gentleman, it kind of demeans the club, it takes away from the glory of last season.
"Whereas Leicester were hugely popular with everyone right around the world, to do something like this now I think loses a lot of that popularity."
Manchester United boss Jose Mourinho said Ranieri's dismissal was symptomatic of "the new football".
Mourinho experienced similar treatment at Chelsea. He led the London club to the 2014-15 title, but was dismissed in December 2015 after a series of dreadful results and what was described as "palpable discord" with his players by technical director Michael Emenalo.
The Portuguese, who succeeded Ranieri at Stamford Bridge when his first spell at the club began in 2004, clearly sees the Italian's exit as further proof of how ruthless football has become at the highest level.
He posted a picture of himself and Ranieri smiling, and wrote on Instagram: "Champion of England and FIFA manager of the year. Sacked. That's the new football. Keep smiling amico. Nobody can delete the history you wrote."
Mourinho's relationship with the Italian has been fraught at times over the years, but he followed up an Instagram tribute to Ranieri with further warm words on Friday, and described his own sacking by Chelsea in December 2015 - again just months after winning a league title - as "peanuts" by comparison.
Speaking about the initialled shirt, Mourinho said: "It is my little homage to somebody that wrote the most beautiful history of the Premier League.
"Somebody that probably would deserve the Leicester stadium to be named 'Claudio Ranieri' - and he is sacked. So I think Leicester made history two years in a row.
"One year because they did the most beautiful thing in the Premier League and one of the most beautiful histories in football history.
"And now they are also in the highlights with the decision that I think has everyone in football united because it is something very, very difficult to accept.
"But at the same time, it is good for all of us to realise how football is at the time and we need to adapt to it.
"I thought last season when I was sacked as a champion, I thought it was a giant negative thing. Now I realise it was peanuts compared with what happened to Claudio.
"So my Instagram (message) was a little homage, my shirt is another one and I don't think he needs more homages because nobody can delete what he did.
"And if some of the stories that I am reading are true (about a player revolt against Ranieri) or have just a little bit of truth, it is difficult to find words to justify that but it is also something we managers we have to cope with."
Mourinho was asked for his view of the decision the Leicester owners had taken.
"I don't want to speak because I am not inside, I have no right to try to find scenarios," the United manager said.
"You know, I think it is Claudio's fault because if last season instead of being champion, he finished 12th it would be amazing and this season he would be still in the job because Leicester play not to be relegated. So it is his fault, he is paying for his success.
"Probably the season started with the typical selfishness of others, people thinking about new contracts, people thinking about leaving, people thinking about more money, people forgetting who helped them reach a certain level.
"But this is not just football, I think this is also a bit of our world. Maybe your world, too.
"Some principles are going away a little bit, so I am really sorry about it. But I lived a similar experience. I repeat, peanuts compared with the dimension of Claudio's.
"But there is something nobody can do: delete the history, so no problem Claudio. Nobody can delete."
However, former England goalkeeper Peter Shilton, who won the Second Division title in an eight-year spell with Leicester, said the club's struggles this season made Ranieri's departure understandable and praised those in charge for taking a "brave" decision.
He said on Radio 4: "Going down would be a disaster for Leicester and I suppose the board have made a very brave decision. Some people have mixed views, but relegation is on the horizon.
"If they stay in the Premier League then they've made the right decision. A lot of people will say there's no sentiment in football, look at what he's done for the club... but he's had a lot of the season to get things going."
Former Leicester defender Matt Elliott does not feel player power would have been the decisive factor but believes the squad need to take their share of the blame.
He told Sky Sports News: "I think the players have to be accountable as much as Ranieri. The manager always takes the brunt of things but it's too simplistic to say Ranieri can't get a tune out of the players this year, he's the reason we need to make a change.
"I think the reason the change has been made is because he's the only change that can be made. You can drop players but you can't just sack them.
"It does make you think the rumblings of discontent within the squad, the rumours that were going around, had some substance.
"I'd be surprised that the owners would take too much notice from players. I think they would take it on board but they would have their own way of thinking as well.
"As professional players you need to get together and get behind the manager, irrespective of what you think of him. I don't think Leicester players have always done that."