song of the same name : [link]
symbolism : a cross in fasces, the main symbol of fascism, on the high corners : the spanish phalanx, symbol or the religious fascist regime of Franco.
In memory of all the victims of christianity, who were killed, tortured, destroyed, because they thought differently, because they had other beliefs (or because they didn't believe).
In memory of all these people burned on pyres because they had physical differences of problems, because they were women practicing science, or simply having red-hair, or simply were pre-feminists. (the witches).
never forget all the slaughters made by the Church/Christians, never forget the age of ignorance, fear and darkness Europe endured because of Christianism, never forget the fascist collaboration of the Church, never forget the theocracy of Franco in Spain. Never forget the christian antisemitism, the slaughter of Cathares, the destruction of old cultures and religions.
never forget the sexism of the Church, how it kept women inferior in rights, never forget how LGBT community was discriminated, how church was sat-ying that black men and amerindians had no souls.
Don't forget that if AIDS spread so much in Africa, it's because the Church says it's bad to use condoms.
Don't forget the fascism of evangelists in USA, the ignorance and biggotery of creationists.
The list could be so long, but I think these crimes are enough to say that christianism is the most murderous religion in the world.