Meanwhile, SDLP leader Colum Eastwood said Ms Seenoi-Barr has in recent days “faced an enormous deluge of abuse from around the world” including “some very serious death threats”.
Several Stormont politicians had already condemned online racist abuse she had received following the mayoral announcement.
Speaking on Friday, Mr Eastwood, who is also the Foyle MP, added: “This kind of stuff is allowed to happen actually because politicians do not mind their language.
“I think all of us have to be very careful about that, whether it’s on this island or whether it is in the government in London”.
He said it was important to stand united against racism.
“We will not be led into the gutter by far right activists whether they are coming from America, Dublin or Derry online,” he said.
Ms Seenoi-Barr, who will succeed Sinn Féin’s Patricia Logue as mayor, has said she is focused on the positives and hoped her role as mayor will show others “nothing is impossible”.
She has been a councillor since 2021, when she was co-opted by the SDLP to the Derry and Strabane District Council’s Foyleside ward before she retained her seat in last year’s local elections.
