In addition to many other design objectives, public parks should be designed as good places to hold public events and demonstrations. The main avenue in Greenwich Park was not designed for this purpose but serves it very well, as here for a memorial event for a British soldier, Fusilier Lee Rigby of the Royal Regiment of Fusiliers, who was attacked and killed by Michael Adebolajo and Michael Adebowale near the Royal Artillery Barracks in Woolwich. Rigby was off duty and walking along Wellington Street. Two men ran him down with a car, then used knives and a cleaver to stab and hack him to death. Armed police officers arrived five minutes later. The assailants, armed with a gun and cleaver, charged at the police, who fired shots that wounded them both. They were apprehended and taken to separate hospitals. Both are British of Nigerian descent, raised as Christians, who converted to Islam (info from Wikipedia).