A sixth form student has been locked up for two years and eight months after he admitted throwing a fire extinguisher from a roof during a riot.
Edward Woollard, 18, joined protesters who stormed inside the Millbank complex in London which houses the Conservative Party's headquarters on November 10.
He was filmed throwing an empty metal fire extinguisher from a seventh-floor rooftop as hundreds of people gathered in a courtyard below.
Woollard, of Dibden Purlieu, Hampshire, will serve at least half of his sentence for violent disorder in a young offenders' institution after being sentenced at Southwark Crown Court.