Christans did most of the massacres but it was bilateral and this is irrelevant: my point is not that Islam is the root of all problems (although it is very troublesome), my point is that we have an identity conflict and that it will worsen as Islam will continue to grow. More and more there are an "us" and a "them" and we want two different and opposed civilizational models. Preaches about living together will not change this. More welfare, shaming against non-Muslims, pro-Muslim propaganda and education will not reverse the tide.
Jews did not amount to a third of Berlin's youth while Muslims do amount to a third of the youth in Paris' region. Jews were not judeaizing Germany, Muslims do islamize France. I have the right to stop the islamization of my country and prevent them to ruin my country as Islam did in all countries it conquered.
But since you insist to make a parallel, let me give you one: those words could be heard in Rwanda, in Yugoslavia, in Sudan, in Nigeria, and in tons of other places where two incompatible identities saw the frictions between them rise, usually because of a demographic or economic shift, and ended up killing each other. Same causes, same consequences. You always assumed it could be avoided, that you just had to fight the far-right, and you have been very naive.
The far-right is the symptom, not the cause. The cause is the underlying identity conflict caused by the fast rise of Islam in our countries and especially in our urban youth. On one hand you may think that by fighting the far-right you will slow down the emergence of conflicts, but on the other hand they are the only ones trying to solve it, through peaceful means for now on (immigration and the likes), because we still can. Later violence may become the only outcome.
You still do not agree? Then ask yourself: can you prevent the worse anyway? If at least you are unsure to be able to succeed, is it wise to continue throwing oil in the fire? Will you not endanger those immigrants that you let enter? Then what are your true motives to drive Islam to grow in your country? Stop Islamic immigration before things get out of hands.