The first youngster admitted two charges of violent disorder after throwing a missile at a police van and taking part in two separate incidents of unrest.
Magistrates heard the child, who cannot be named for legal reasons, was part of a group that gathered on July 31 outside a hotel housing asylum seekers.
Prosecutors said the boy was "filmed by police kicking the front window of a vape shop" and was also seen kicking a bus as it drove past him in Manchester.
He will be sentenced at Manchester Magistrates' Court on September 2.
Another 12-year-old appeared at Liverpool Youth Court charged with violent disorder in Southport on July 30 and also pleaded guilty.
Jessica Pridding, prosecuting, said: "The defendant was seen on CCTV' among the crowd and he appears on the footage to throw something towards the line of uniformed police officers carrying shields. He appears to mount a bicycle and ride away from the police officers." He will be sentenced on September 17.
An 11-year-old boy has been charged with rioting and throwing petrol bombs after disorder in Belfast on July 15. He is due to appear at Belfast Youth Court on September 6.
So far, 927 people have been arrested and 466 charged in relation to the recent disorder, a spokesman for the National Police Chiefs' Council said yesterday.
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
PEP'S HOME
Nobody fears us here anymore admits boss
I still get imposter syndrome...it's TRUE
As Spandau Ballet songwriter Gary Kemp releases a new solo album, he comes clean on his confidence crisis, older parenthood and why Eighties musicians remain the best
Harry tackles spin issue as he steps into No.2 role
HARRY BROOK demonstrated his leadership skills last year, inspiring England's comeback from 2-0 down against Australia to 2-2 in the ODI series.
Take a gamble
Maria Breslin finds Vegas a heady mix with glitz and a cracking canyon
Bees perfect for Kayode
BRENTFORD have signed Italy Under-21s defender Michael Kayode on loan from Fiorentina, with an option to make the transfer permanent in the summer.
Daniels is travelling
JAYDEN DANIELS' \"terminator\" mentality has helped carry Washington to within 60 minutes of the Super Bowl.
Boxer boost to Army's fighting power
THE first of 623 state-of-the-art British armoured vehicles has been unveiled, as the Army bolsters its fleet amid rising global tensions.
Late bloomer Gagai makes Giants leap
IF ANYONE knows the value of persistence it is Huddersfield's new signing Jacob Gagai.
Timed my pees to beat news queues
A PALACE aide once let slip that the late Queen's unswerving policy on visiting the loo while on a royal trip: \"Always, ALWAYS go when you can.\"
Sepsis alert as winter infections spread
PEOPLE are being urged to look out for signs of life-threatening sepsis this winter as infections spread.