Congress passed it to encourage people to move and settle west. they promised free land, and they knew that people would rush to claim it. The 1862 Homestead Act accelerated settlement of U.S. western territory by allowing any American, including freed slaves, to put in a claim for up to 160 free acres of federal land.
I don’t really have a strong opinion on this but, i think that they should consider changing these logos, just like they did for the Washington Football Team, which was once the Redskins.