I have listened to people say stuff like 'look at that school playground, barely a white child amongst them' or some fool on the weakest link answering the question 'what is the most common surname in Britain' with 'Patel?'. 'Whites are in the minority in england nowadays *snigger*'. When these types of thing are said, they are never followed with praise for multiculturalism.
If he genuinely thinks that there are 25% white londoners then there is nothing I can say other than... what a stupid person.
The person that 'corrected' him with 5% was either even more stupid, or trying to make some sort of insinuation that whites are outnumbered or there are too many ethnic groups in london. Whatever, I don't care to try to interpret it anymore.
I have been ignorant in my life. On several occasions I have told someone the wrong percentages of the gases which make up our atmosphere. A few times I got the brentford goal scorer wrong. But when talking about something as sensitive as race, I have never been so completely off the chart wrong as 25% whites in london. Or 5%. The guy must be living on a different planet!? Ronan and Banana picked this up before me, have a go at them.