I doubt you're going to find a lot of Christians willing to become suicide bombers or decapitate school administrators in the name of their religion.
Today, with the current mindset of most Christians in the West, that is a true statement. Except for a
very few at the margins.
And the
margins is where such activity will come from. If those at the margins learn the lessons and heed the incentives of leftist/Muslim interaction, the margins will grow as sure as any other economic/sociological phenomenon.
If Christianity is merely mass delusion, expect adherents to eventually respond as all others. (And if this is not the expectation of the anti-Christian sorts, why is that?)
We get regular reminders of how awful the Christians were in the past: crusades, pogroms, mass expulsions. Yet the same folk who harp on that (to the exclusion of Muslim and Jewish and other's evil doings) seem to think they can kick the Christian dog around and never get bit.
And if you do have one or two Christian crazies over the next decade or so, the left will define these isolated incidents as equivalent to Islam's daily outrages, and they'll be held up by the left as absolute proof that radical Christians are even more dangerous to civilization than radical Moslems.
Depends on how many. One or two? True that.
A regular occurrence aimed at journalists and academics...you'd get a different response as the possibility of ending up a grisly video on youtube sinks in.
Violence and fear are effective. Just look at the coverage of violent Muslim groups and countries from 1947 to today. When they killed merely Jews, Christians, Hindus, Buddhists, and pagans; they had very poor coverage in the press. Start in the 1970s killing journalists and academics (think American University in Lebanon) and immigrating to the West and you see a whole new sort of coverage.