My friend Bubba wrote the following to me in an email in June of 2013.
In The Four Loves, CS Lewis points out that, for everything but the love of God, any love that becomes a small-d deity immediately becomes a demon. Any ideology can become an idol, but I honestly think the Left's ideology is an intrinsic rival to Christianity. It's not just that some Leftists go overboard, it's that Leftism requires them to worship at its altar.
Man's two greatest needs is radical change and a sense of belonging. Christ offers both, through regeneration by His Spirit and adoption into His family. Leftism presumes to offer both as well: we know that the world's not right, and the Left offers utopia through revolution, and we know we don't belong, and the Left offers a sense of belonging through the State.
Christianity and Leftism are rival religions, with competing solutions to man's most fundamental needs.
Smart guy, that Bubba, and a devout Christian.