Dear Sir, I have been researching the anti-Black, anti-Catholic and anti-Jewish movements in the US since 2003. Thus far have published several articles and a book on Ku Klux Klan, neo-nazis in the US. As far as Poland is concerned, there is at least one, non-governmental organisation combating racism - Never Again association from Warsaw. You may contact them at: https://www.nigdywiecej.org/en