By Debbie Emery - Breaking Celebrity News Reporter

One of New York's most notorious serial killers who has the shooting deaths of 13 victims on his conscience has spoken out about the senselessness of violence and the "glory of guns."

David Berkowitz, who as the Son Of Sam terrorized the city from 1976 to 1977, made his surprise statement from the maximum security Sullivan County Correctional Facility in upstate New York on Friday, where he is serving six consecutive 25 years-to-life sentences.

“It's all senseless. Society has to take the glory out of guns. Young people have no business carrying a gun. I would love to speak bluntly to those gang-banging teens and wannabes and tell them prison is nothing like what you think," said the convicted killer on the 35th anniversary of his arrest, reported the , New York Daily News.

"If you’re packing a gun, you’re making a big mistake, and you’ll regret it," he warned.

Dubbed the '.44 Caliber Killer,' Berkowitz's comments were made in response to the recent spate of shootings that killed 12 and injured 71 during a screening of The Dark Knight Rises in Colorado, and the white supremacist who opened fire on a Sikh temple in Wisconsin that left six people dead.

His own shooting spree lasted a terrifying 13 months during which he preyed on victims as they sat in their cars on lovers' lanes or walked on the streets of New York's busy neighborhoods. Berkowitz went on to taunt the NYPD in a letter to Captain Joseph Borrelli - where he coined the name Son of Sam – and in notes to Daily News columnist Jimmy Breslin promising to "buy all those guys working on the case a new pair of shoes," upon his capture.

That day came on August 10, 1977, when he was arrest