A THUG once convicted of vandalising an MSP’s office with nazi graffiti was jailed for 21 months after robbing a schoolboy.

James Malcom, 20, pounced on the 16-year-old in Kirkintilloch in January. He punched and slapped the teen before stealing his iPhone, wallet and designer Armani watch.

The attack took place 13 months after Malcom was convicted of vandalising Rona McKay MSP’s Kirkintilloch office. Malcolm also caused £14,000 of damage to 27 headstones at a cemetery and scribbled a swastika on one of them.

He then sprayed “All N*****s must hang” and “White Power” at two parks in the area and was sentenced to 28 months.

Malcolm pleaded guilty at Glasgow Sheriff Court to the assault and robbery on Thursday.

Sheriff Sean Murphy QC said: “You have accepted committing what was an assault and robbery on a schoolboy which took place a matter of days after committing a violent offence.

“The only thing open to the court is a period of detention.

“You took a calculated risk that had extremely unfortunate consequences on the victim and yourself.”

Sheriff Murphy also imposed a nine-month supervised release order to follow after the prison term.

The court heard the teenage victim was on the way to a friend’s house when he was confronted by Malcolm.

Malcolm “punched the boy on his left eye and slapped him on the face a couple of times.”

He went on to raid the teen’s pockets and snatched his iPhone, wallet and the designer watch which belonged to his dad.

Malcolm fled the scene while the boy took shelter at a friend’s house nearby.

The teen contacted Malcom’s younger brother by Snapchat to have his belongings returned.

The brother replied that he should go to the police and a 999 call was made.

Officers showed up later that evening and arrested Malcolm before searching his bedroom.

Prosecutor Mark Allan said: “Inside was a bag containing the iPhone, the watch and the wallet which was returned to the owner.”

Malcolm replied: “It wasn’t me” when cautioned and charged for the offence.

Martin Hughes, defending, told the court the offence would have been an “unpleasant experience” for the victim.