This event is organised by the European network UNITED which is supported by more than 560 organisations from 46 European countries to support the message that originated in 1945 at the end of the WW2 « Never again » a message that nowadays isn't respected as hate crimes are still happening all over Europe and far right movements are getting more and more support in national and local elections.
If you are interested in supporting this cause you can check the UNITED campaign website at : http://dayagainstfascism.eu/
In conclusion, I will end this article by quoting one of the greatest man that ever lived in this world, The Mahatma Gandhi : "Be the change that you wish to see in this world".