The Protestant Atrocities: Manifest Destiny and Slavery

I've highlighted some of the sins of the church in the past, like the witch hunts, and the inquisition, but some evangelical Christians want to claim that was the Catholic church and not the true church. Well then, how about Manifest Destiny and Native American slaughter, along with southern slavery? What Christian people have done in the name of faith and religion is atrocious. See the video below:

I have a hard time understanding the lyrics of this, but the images and story of Native Americans is absolutely horrible. Ever hear of the trail of tears?