I'd recommend watching it before objecting to the content as a whole, as some of those objections are answered. For instance, the quote about political faction

I'd recommend watching it before objecting to the content as a whole, as some of those objections are answered. For instance, the quote about political faction being more divisive than race or religion was explicitly made to contrast the "bad old days" of Jim Crow or Catholic-bashing against today's society. Everyone can identify the hatred of those times, and pointing out that political identity is now more divisive than race/religion in their respective heydays really does show that political division is a problem (as opposed to just saying that political division is more prevalent than racial division which, as you mentioned, would be entirely expected.)