A racist coward hurled abuse at a Sikh schoolboy and beat the youngster's friend with a stick.
Nazi-supporting Jason Dickeson targeted Muslims, Jews, Roman Catholics and Mexicans in a vile rant.
His behaviour left school pupils in East Kilbride "absolutely terrified", Hamilton Sheriff Court heard this week.
Dickeson, of Catacol Grove, East Kilbride, admitted assaulting a 15-year-old boy in Westwood Square on October 2, 2019.
The 48-year-old - who has an active case so his identity cannot yet be revealed - also admitted threatening or abusive behaviour aggravated by religious and racial prejudice.
Neil Thomson, prosecuting, said Dickeson, who had been drinking, confronted a group of three boys as they went to shops at lunchtime.
Earlier a woman had overheard him making comments, including reference to Nazis, and was so upset she hurried home and contacted the police.
Mr Thomson told the court: "The accused directed his attention at a 15-year-old Sikh boy, shouting 'F*** Mohammed' and 'F*** Sikhism'.
"The boy was upset and turned back towards his school.
"Dickeson followed him and his friends, swinging a walking stick above his head and brandishing a bottle.
"This caused concern to other school pupils and members of the public who moved away from the area.
"Dickeson continued to follow the three boys and struck one of them with the stick, causing a laceration to his scalp.
"The boys then ran back to their school. In statements later, they said they were absolutely terrified by the accused's behaviour."
Mr Thomson said police officers arrived to find Dickeson shouting phrases including 'Sieg Heil', 'Fenian b******s', 'I’ll gas you Jews' and 'Build the wall'.
Defence agent Jackson Bateman claimed Dickeson was hurt in a scuffle with other youngsters earlier and needed hospital treatment.
Sheriff Alasdair MacFadyen said the charges were "very serious" and deferred sentence until next month for background reports.
Dickeson had his bail continued.
Two years ago Dickeson was electronically tagged for making Nazi salutes in East Kilbride town centre.
Last year he was given a community payback order after he was spotted scrawling swastikas on the road outside his home.
He told neighbours they were "not welcome in my community" and threatened to burn down their homes.
Dickeson also claimed to be a pal of right wing extremist Tommy Robinson.
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