Christianity in America is 'persecuted' because they're largely sanctimonious, refuse to co-exist with others with differing beliefs without attempting to convert or eject them and because their leadership has this weird way of finding a justification for every atrocity committed in the name of their beliefs.
notice how all 3 of those tenants work if you change 'Christianity in America' to 'white supremacy'? 
notice how all 3 of those tenants work if you change 'Christianity in America' to "fascism"?
and they all run the same playbook of acting like they are eternally under attack for their beliefs and their ideals and for being who they are and have been told to be by some long-dead forebearer despite operating from a position of power, and routinely actually being the perpetrators of much of the persecution they then claim is being done to them.
This ChristNat subsect is literally waging a religious theocratic coup on a country founded on religious freedom; while at the same time claiming to be the platform of conservatism and respecting traditions and 'the forefathers'.
the only thing Jesus ever got truly enraged about in all his time present in the bible, it was while watching people use the church for personal enrichment and to fulfil their goals in lieu of what the teachings said they should do. He flipped tables and everything.
But somehow, the party of weaponized, commodified and monetized Christianity wants everyone to believe that what Jesus REALLY hated, was... trans people and immigrants. And all the while, they are enriching themselves off of the lie of worshipping the God of Isaac and Jacob. When really, they worship at the church of Franklin and Jackson
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Taking money from gun lobbies and giving only 'prayers' to the children killed by their decisions. Then calling themselves 'pro-life'.
tl;dr
The religion demands a willingness to self-gaslight.
it was founded on it.
That oft leads to very, VERY easily gaslit people.
They're custom-designed to be fooled.