A man who was repeatedly kicked, punched and beaten before his attackers left him shaking on the ground said he is still taunted by his ordeal.
The 40-year-old, who wished to remain anonymous, was mugged by the three teenage boys during the horrific attack in Brook Road last Wednesday night.
He has agreed to share his story with the Borehamwood and Elstree Times to warn others about the dangers of walking alone at night.
He said: “I was walking through Brook Road after a long day at work when someone slammed me to the ground from behind.
“My heart was racing and then two other boys came out from nowhere and began punching and kicking me, shouting racist comments at me.
“I was really frightened and thought they were going to kill me. I was shaking and crying.
“They broke my glasses and I am blind without them so I could not see what was happening.
“Feeling powerless was such a horrible feeling. I still think of it today and it still terrifies me.”
The teenagers left the shop assistant shaking in fear on the floor, his face swollen and blood spewing from his knees.
They then ordered him to hand over his rucksack – which contained confidential documents – and ran off in the opposite direction.
But just as he tried to stand up, one of the boys came running to punch the defenceless man back to the ground.
He then managed to run back home where he alerted the police, who arrived minutes later.
He added: “I feel lucky to be alive. If they had a knife with them, this would be a very different story.
“I am really concerned that the boys are still on the loose, so I would like to warn people about what happened to me. Maybe it will stop it happening to someone else.”
The offenders are described as white, one was wearing a baggy black top with a hood, another wearing black jogging bottoms and a third wearing grey jogging bottoms.
No arrests have been made and any witnesses are urged to call the police.