First off, NOT ALL
Secondly, criticizing the people doing extreme right wing terrorism is just going to breed a culture where right wing terrorists feel isolated from society, which will lead to the creation of more right wing terrorists.
Thirdly, you have to understand the struggle of these people against IMPERIALISM. These people were happy to be left alone in their countries, until those nations were destroyed by foreign invaders looking to crush their ancient culture.
The truth is that the real evil people are US, the people who believe in progressivist chauvinism, the people who believe that we can force our way of thinking on the rest of the world. We must end our crusade of cultural imperialism, and allow other people's cultures to evolve according to their own path.
Most people would rather die than think, and most people do. -Bertrand Russell
Before the camps, I regarded the existence of nationality as something that shouldn’t be noticed - nationality did not really exist, only humanity. But in the camps one learns: if you belong to a successful nation you are protected and you survive. If you are part of universal humanity - too bad for you -Aleksandr Solzhenitsyn
Around a third of your posts is around ''The far right will come and exterminate all race traitors'' with barely concealing giggling. That's not exactly a new thing, since the actual far right have been squeaking variations of this since 1930. That's also the alleged ''plot'' of the holy scripture of the alt right, the Turner Diaries. Gospel for some people, unreadable drivel for people who do stuff other than meth,
One horrible attack by fascist Italian: OMG we need to stop all nationalism and have open borders!
Hundreds of violent attacks by migrants: Wow, bigots, it's no big deal so stfu and be more multicultural pls.
Is it so outrageous to believe people will side with those that offer them and their families protection rather then those who would gamble with their well being for strangers who will do nothing but be a burden to them?
You wondered why it is happening I wonder how it could not.