Nothing directly to do with Pinter, but it resonates with Mountain Language. A documentary by Ken Loach commissioned by British Charity Save The Children who suppressed the film (despite this I support them- they are a good charity).
"But in the documentary, Loach travels to [an]... institution in Nairobi where children were forbidden to converse in their native tongues."
The current head of Save the Children says ""It is a bit embarrassing to see that," said Justin Forsyth, chief executive of Save the Children. "But I think it's good to air these issues and we should be big enough to take it on the chin. Save the Children has changed a lot, but the issues that come out in the film about colonialism, aid and charity are still relevant today. I think it's great it's being shown. I don't think we should be in the film censorship business and we shouldn't stifle debate."
The link is here
www.bbc.co.uk/news/entertainment-arts-14628381