I don't think I implied racism, but rather ' implied' that some people in the cold light of day , on such a unforgiving media as the internet, might construe it that way. Sorry for any offence caused.
Personally not even sure that PR would be big enough now! Perhaps Blythe Hill Fields/ Ladywell Fields/Mountsfield Park/Crystal Palace Park/Brockwell Park/Burgess Park? If the event is really becoming mega then somewhere a bit more central ie Battersea Park might even be better and with better transport links.