Footage of a machete brawl in a family park has revealed the brutal reality of life in one of south London's gang hotspots.The violence unfolded around midday on Sunday at Burgess Park in Camberwell, with four thugs trying to stab and slash each other in broad daylight. In the video snapped by a local, bystanders can be seen trying to break up the fight.The shocking scene once again calls into question Sir Sadiq Khan's repeated insistence that London is a 'safe city'.It also sheds light on the gang wars blighting the local area, with disputes over drug markets or petty personal slights frequently erupting into violence.Several street-level gangs are known to operate around Burgess Park – the most significant being the Peckham Boys to the south and Moscow17 to the west.In recent years, Moscow17 has been embroiled in a bitter feud with Zone 2, a Peckham-based gang – leading to a string of stabbings and murders.Police arrested four teenagers, aged 16 and 17, over the machete fight in Burgess Park, which ended when a brave passer-by rushed forward to break it up.Officers have not confirmed whether any of the attackers are linked to specific local gangs, although this is likely to be a line of inquiry. Video shared on social media showed three teens carrying machetes fighting in Burgess Park, Camberwell Another notorious local gang is Moscow17, which operates between Burgess Park and Kennington Park to the west. The gang appeared on Tim Westwood's YouTube show