Christian theocracy is a Leftist boogeyman with no basis in reality. It’s likely just more Leftist projection as they no doubt want a Marxist “theocracy” of sorts.

The Kingdom of Heaven referred to in the Bible isn’t a literal kingdom on earth created by men. There’s nothing in the Bible that talks about Christians establishing a kingdom or government of any kind, although there are some denominations who believe there is. The only time any such thing is supposed to happen in the future is after the second coming of Christ, at which point Christ will subdue the entire world personally, killing anyone who rejects Him (Christ’s second coming is totally different from His first coming — where His first coming was in meekness and humility, His second coming has Him personally slaughtering everyone in the world who rejects Him, bringing the entire world into submission by force… quite the contrast from the first time around).