My perspective is you may be seeing more Christians prepare for what they may see as a coming attack on their religious views. When the Nazi's rounded up the Jews not many fought back. They may be getting ready for what is supposed to happen in the book of revelation. I would never fight someone just because but I would not hesitate to defend myself either. Now as to your question: "Are we seeing a trend that will permanently reshape the image of Christianity?". I think that maybe we are. Take the Hutaree for example. Many more people are being persecuted for their way of live whether it being Christian a prepper etc etc.. To me it seems they are preparing for what might be coming down the line at a later time.