I always considered myself agnostic leaning atheist. I consider leftism to be antithetical towards religion. All religions have a class structure to them, do priests, rabbis, or imams not exist? And what about marxism, is karl marx not venerated by some leftists in a weird atheist sort of way?
The Preacher and the Slave dynamic critique I recall being very present in black communist sharecropper and industrial union organizing in the south in the first half of the 1900s, especially 1930s-1940s, where black workers would hold religious views but had strong criticism of the role middle class preachers had on the communities they worked in. Agreed on aspects of its morality still show up today in people's position, whether it's the moralized work ethic, martyrdom, or a moralist approach to what is best analyzed through the lens of class struggle.
Nice prayer for the second video.