Trent University's undergraduate students union is asking the school not to invite Peterborough Mayor Jeff Leal back to campus after he used the n-word while speaking to a class last month. 

The incident happened on March 19, when Leal attended a Trent business class as a guest lecturer, according to a statement from the Trent Central Student Association. 

"Furthermore, he expressed racist sentiments that demeaned both the Black and Mexican communities," the statement says. 

"The City of Peterboro…