Protests over the arrest of murdered university student Henry Nowak turned hostile on Tuesday evening, with bricks, bins and bottles thrown at police officers.
A clean-up effort involving council staff, residents and community leaders has taken place.
The condemnation of disorder came from the senior city councillors across the political spectrum.
Labour council leader Sarah Bogle said: “A lot of damage and distress was caused once they (protesters) got to the road where Henry died.
“It is just unacceptable to bring that level of violence and hatred into a residential neighbour, particularly at a time when we need to honour Henry Nowak’s father’s wishes, which are to not weaponise such a tragedy.
“This was quite the opposite of what he asked for when he stood outside the court this week.
“It’s hugely disappointing and very, very upsetting.
“I just can’t comprehend how people can be so disrespectful.”
Cllr Bogle said there had been an incredible team effort to clear up the area.
She said there had been engagement door-to-door with residents and businesses to provide reassurance.
Lori Foster, Green Party Portswood councillor, said: “Last night was very scary for a lot of residents.
“The Portswood community has always prided itself on being one of unity and safety.
“As Portswood ward councillor, my priority is each and every resident and I cannot condemn the actions of the rioters last night strongly enough.
“The way in which the murder of Henry Nowak has been politicised and used as a tool to stir up hatred is unacceptable.
“I await the IOPC (Independent Office for Police Conduct) investigation and think it is totally right that the conduct of officers be heavily scrutinised – especially in the wake of the footage released.
“We must not lose sight of the fact that a family is without their son, and remember that this family deserves to grieve in peace.”
Fellow Green Party colleague councillor Kat Barbour said: “As a long-term resident of Portswood, last night’s events were the worst time I can remember in our ward.
“There are so many positives in our community and we will be working to let people talk through how they feel. We will also be conferring with the police and community safety teams on how to keep everyone as safe as possible in future.”
Conservative group leader Peter Baillie said the disorder was “unacceptable thuggery which I condemn without equivocation”.
He added: “However, the murder of Henry Nowak is a wakeup call for what sort of society we want.
“Not one in which the police deal with people differently because of their skin colour, nor one in which the police are terrified of being called racist, but one where we have people from many nations living together with the common thread of being British.
“The political class, especially from the left need to understand the deep anger being felt right across our country as to how we have got to our current situation.”
Reform UK deputy group leader Philip Crook said his party strongly condemned the violence that took place.
Cllr Crook said: “Emotions are high but violence will not solve anything.
“An IOPC investigation is taking place and we hope that it will deal with the police issue.
“However, the Labour Government and Police must take action to restore public confidence and respect in policing by first scraping the Police’s race training which encompasses mandatory anti-racism, implicit bias, and cultural history curricula introduced for all officers and staff in the UK.
“Reform will, once elected into government, conduct a review of our policing and legal system to ensure equality for all.
“We will and hopefully the media keep pressure on the IOPC to deliver their findings in good time.”
Liberal Democrat group leader Richard Blackman said he was deeply saddened by the violence.
Cllr Blackman said: “My thoughts have been guided by the words of Henry Nowak’s father, Mark, who in his dignified and forceful speech after Monday’s sentencing hearing, condemned the ‘inhumane and degrading; treatment of his son by police, but also emphasised: ‘We do not want his death to be used to create further division, hatred or tension. We want his story to help make our streets safer for everyone.’
“Last night’s violence was totally unacceptable and has only caused harm and brought fear to our city.
“The investigation by the Independent Office for Police Conduct into events on the night of Henry’s murder must now take its course. His family deserve answers.
“In the meantime, I’m sure that community and political leaders in Southampton will continue to work to maintain cohesion and trust.
“Our city has a very strong network of civic organisations, which will see us through these difficult times.”
Henry Nowak was fatally stabbed by 23-year-old Vickrum Digwa.
Earlier this week, Digwa received a life sentence with a minimum term of 21 years in prison after being found guilty of murder.
Police body-worn video from the night the University of Southampton student was killed was released on Monday.
Following the publication of footage, hundreds of people gathered outside Southampton Central Police Station on Tuesday to question police actions in the immediate aftermath of the stabbing.
The protest later moved to Portswood and Belmont Road, where the murder took place.
Disorder broke out, with damage caused to homes and vehicles, and police officers reporting objects being thrown and makeshift weapons being used.
Eleven police officers and a police dog were injured.
Hampshire and Isle of Wight Constabulary chief constable Alexis Boon said two people had been arrested and promised this number would rise.