I think one of the reasons Christians insist on thinking of themselves as persecuted, is that this a religion that was established in persecution. That is, at the time that most of scripture was composed, much of the original theology was established, and most of the stories to which traditions trace their origins (whether they are apocryphal or not), Christians were, in fact, a minority, maybe not as persecuted as a Jew in Germany in 1941, but there were prejudices against them, biases against them encoded in the law, and they were bullied and ridiculed.
The oldest known image of a crucifixion is a guy kneeling before a crucified person who has the head of a donkey, and the caption “Alexamenos worships his god.”
Much of how to be a Christian that is described in the bible, and the works of the earliest church fathers is about how to live as a persecuted minority.
So people trying to be Christians are trying to live as a persecuted minority, in a world where they are actually the powerful majority. And they don’t realize that there is a parallax distortion. Or maybe cognitive dissonance, I guess-- their attempt to resolve this dissonance seems to be to try to goad people into persecuting them. Some join minority sects of Christianity, and claim they are the only “true” Christians, set up a lot of strictures that makes their lives difficult, hunt up proof texts for them, and then say they are being persecuted.
At least, that’s how it looks to me, and yes, I have read the Christian bible. I took a class in early Christian history (Paul through the year 500CE), and had to read the gospels, Acts, all the epistles, and Revelation, in addition to the early church fathers, the gnostic gospels, and some other things that were considered for inclusion as Christian scripture, but not used.
Got an A.