This is a trend indeed. But, it's not new. It's many hundreds years old. Why so activated now? It's simple. It's childish simple. The West (the countries of the post-Christian civilization)created the ideology so called “Political Correctness” which gives the jihadists the free hand to act.
The West reacts too late and always after, which is always the blind shot as they cannot, or even do not want to, face the truth - it's Islam, not a bunch of the so called “jihadists” or “islamists” to blame.
So, doing this we make ourselves defenseless and just invite them to kill us.
Islam should be officially banned all over the Western Culture as an ideology of crime which is contradictory to all human right acts of the Western World since the Hellenic times.
Actually, you may call me a bigot, but, to me it's obvious that the West, which rejected the merciful Christ, will have to face the ruthless Allah since “the nature knows no void”, as a Polish proverb says.
Try to watch this carefully. To a large extent, it's still up to date, I think: https://www.youtube.com/watch?v=OwRTBmLaTU8