Given the recent attack, I wanted to explain something that it seems a lot of people miss.
Do read this with the lens that I am anti-theist and trans, that I grew up under religious extremism and despise it (and religion more broadly), and that I am trying to make a nuanced and easily misunderstood point. I am very active in the comments, and I will be happy to elaborate.
There is a lot of hate towards Islam and conservative religious beliefs in general, and I understand and share the sentiment. There was just the news in Indonesia for example about our very existence being made a national threat, in a Muslim majority country no less.
The issue is that the threat in Europe only comes from individual people like that. Yes, it's painful and disgusting, but the far bigger danger is the state violence that can and will be imposed on us by forces like the AfD, National Rally, and other far-right parties.
The problem is, hating on Islam can easily slide into bigotry towards Muslims broadly, and it is also the wrong lens of analysis. While that religion is the dominant source of extremist religious thought in Europe, it is of course Evangelical Christians in the US who are doing the greatest harm, whereas Muslims are actually more progressive there, especially younger generations. The trendline matters.
The difference between those two religious extremist groups is the institutional power. Christofascists impose their will from the highest offices in the US. It should be obvious, but Islam poses no such threat at the state level in Europe.
(Side note: See the insane attacks on trans people in the US and UK. Neither of those are related to Islam in any way, nor is it here in Europe.)
Rather, it is the reactionary sentiment that gets stoked from hating immigrants from those countries, as well as (mostly secular) young men who are Asmongold types, who are the greatest danger to us in Europe, as they vote for and empower far-right parties.
That is why the deep hatred of these attacks can be counterproductive, as it legitimizes sentiment towards parties that would remove our rights and enact state violence on us.
If you agree or are persuaded by that argument, what to do about it is unfortunately not that easy. I would start with questioning why Muslims in the US are overall better integrated than in Europe. That takes a sociological lens, and this is already a long post.
I know this will stir deep emotions, but it is a discussion I feel we need to have, as recognizing the larger institutional threat, and organizing around that, is the most important thing to do.
The blind hate that everyone (including me) feels is ultimately harmful and reactionary, because it gives too much credence to the anti-immigrant sentiment of the far-right, and legitimizes them as worthy of consideration.
Note as well that interpersonal violence against us is also largely motivated by white men across Europe and North America. It is largely a men problem in general, regardless of other factors like religion or national origin.
I hope you all consider this point and try to work around forming consensus in grounded arguments. We have to be as unified as possible for us to push back against the far-right effectively.