Is it? Being pressured by your peers to not speak out isn't a problem? It gets right to the heart of it.That is their problem if they don't want to speak out. Can't really do anything about that.
People who actually try to change the ugly tradition to something racially neutral have to back off due to threats of violence.
http://www.nltimes.nl/2013/10/24/no-rainbow-pieten-after-threat/
How can you honestly pretend that the discussion in The Netherlands is anywhere close to being open and inclusive? It isn't, not by a long damn shot. Do you really think that the majority isn't pressuring the minority to stay silent on this at all?