The exception?
Native-Americans.
Don't know what his beef was, but he really seemed to hate them.
Probably because all the Indian men he ever encountered were the most obnoxious drunks, the Indians could care less about white men, women, and children. Indians would brutally murder babies, men, women, and children. Often times taking scalps that they would wear as trophies. They would trade thousands of acres of land for trinkets, break every treaty they ever signed with acts of brutality against innocents. Talking to a real life Indian on the American frontier would be like you or me talking to an environmental/spiritualist/hippie/islamic ISIS zealot but with exponentially less intelligence and exponentially more insanity. Probably smelt horrible too.
Most Indians in Twain’s day “were” bloodthirsty dumb as rock savages.
That’s the simple truth.
I suspect when the white men passed out blankets covered in small pox and other diseases it was retaliation against coming back to town to find everyone brutally murdered, scalped, women and children were probably raped and sodomized.
Any movie, or book glamorizing North American Indians as honorable, peaceful, and/or selfless is simply not true.