Multiple reports describe an incident involving masked teenagers in Burgess Park, Camberwell, in south east London, where violence breaks out in broad daylight. According to the accounts, the incident occurs around lunchtime and involves several youths attempting to attack each other with machetes, including actions described as trying to stab one another. The reports characterize the event as occurring in a family park setting. In both sources provided, the focus is on video or eyewitness descriptions of teenagers wearing masks and using machete-like weapons during the altercation. The accounts do not provide additional confirmed details such as the number of people involved, whether anyone is injured, arrests made, or charges filed. The information presented is limited to the location, timing, and nature of the attack as described by the outlets, with no further corroborating facts included in the provided text.