I saw the link to the YouTube video. In Holland we have about 30 different nationalities and if you put up a sign on your bar or club stating Dutch only, you would very quickly find your bar or club closed by the police, you would find yourself in jail and get to pay a VERY high fine, discrimination is not allowed by law here. Not that it does not happen, but you could never go as far as in Japan.
But honestly I have Japanese friends and they are the sweetest people on earth so I guess it depends on where you go and how you yourself behave. Remember thre are bad people everywhere who yell abuse and call themselves nationalists, in Germany, Spain, France, even Belgium.
I just hope if I go to Japan the Japanese like me as a gaijin visitor, if they do not, well, is there anything so sad as unrequited love?