MediaBodyguard | Close Protection | Celebrity Security's video: Police attacked stabbed injured at 4000 people BashmentinthePark meet up riots Hot weather

Police attacked, stabbed & injured at 4000+ people meet up in Hot weather, London, England, UK Tempers flared as police tried to disperse the 4,000-strong crowd and began seizing sound equipment as a minority chanted *Police locked in tense stand offs with gangs of teenagers as four youths are knifed and five police are injured *Five people - including a police officer - stabbed last night in London at three different events across the capital *Around 4,000 youths descended on Hyde Park for water fight and 'bashment' music festival but event turned violent *Five officers injured after they tried moving people on and seizing sound equipment, causing fighting to break out *Two revellers were also stabbed during chaos and are both - like the constables - in hospital receiving treatment *Meanwhile two 16-year-old boys were also stabbed and a supermarket ransacked in Burgess Park, Southwark *Police attempting to shut down an illegal block party in Stamford Hill, Hackney, had bottles thrown at them *McDonald's customers also seen running out after appearing to steal from takeaway in Marble Arch Five people - including a police officer - were stabbed last night during a night of violence in three different parts of London yesterday evening. A Metropolitan Police officer and two members of the public were knifed and four other PCs were injured after a water fight and party in Hyde Park spiralled out of control in the city's worst bout of violence since the 2011 riots. Objects began to be hurled their direction and one officer was struck with what is believed to be a glass bottle and had to be taken to hospital for treatment. More violent scenes then erupted - with another constable being stabbed and two members of the public also suffering knife wounds as crowds chanted The police officers are both described as having 'non life-threatening injuries'. There has been no update available on the condition of the two others who were also stabbed. Unconfirmed reports on social media indicate all of the events were pre-arranged but poorly organised. The event in Hyde Park had been called 'Bashment in the Park' and a flyer had been circulating on Twitter and Facebook for a couple of days. Grainy footage has emerged of a young man, who has not been named, apparently being set upon by three others in the middle of a busy road near Hyde Park as buses, taxis and cars are forced to swerve around the attack. In the footage, which was posted on social media, a youth wearing a white t-shirt appears to repeatedly thrust a weapon at another young man, who is on the floor grappling with two attackers, before all three run off as onlookers scream in horror. When police eventually tried to disperse the crowd shortly before 9pm, they were met with a 'hostile' reception.