Muslim immigrants will have de facto faced as much (if not far more) hostility and prejudice before any of those events.
What changed is that by the late 20th century, it had become politically unacceptable for right-wing parties to be perceived to be preying on overt racism towards their countries' brown-skinned citizens. But the War on Terror at the start of the 21st century created a new organising framework for nativists, whereby they could incite hatred against exactly the same brown-skinned people as before, but claim they were targeting them for their religion and not their skin colour. At the heart of it is still the same prejudice towards those who are different, it's just that the aspect of difference they choose to focus on today is more politically acceptable than the one they used to focus on.
From the perspective of a brown-skinned Muslim immigrant, the ideological hoops the far-right jump through are likely irrelevant. These people were targeted by nativists before, and they get targeted by nativists now.