I didn't watch the video. But as far as being "disowned" or "not being welcomed" to family functions due to politics. I have no problem with it under certain circumstances. A few years ago a family member's husband was told they were no longer welcome to family events because no matter how many times they were asked not to bring up politics, they continued. My wife's side of the family (as I've disclosed on here a few times) is large and extraordinarily diverse when it comes to religion, politics, social and economical factors . There are atheists, agnostics, protestants, catholics, liberals, conservatives, libertarians, doctors, school teachers, factory workers, electrical engineers, hair stylists, college professors, stay at home moms, accountants, extraordinarily rich, upper middle class, middle class and those who go back and forth from working poor to lower middle class and one drug addict.
When we have family functions the purpose is to spend time with family, allow the cousins to play together, see grandma and generally have a nice relaxing good time. As some have already mentioned, it is rarely a good idea to begin discussing politics and religion at these type family gatherings. We had one family member on my wife's side who is no longer welcome to family functions because he would do nothing but start heated arguments. He was repeatedly ask to refrain from doing this and he simply couldn't help himself. The last straw was two years ago during Thanksgiving. He started up again and finally one of the uncles, who'd grown very tired of having to deal with this when getting together at his mom's house, escorted him out the door. It caused a big uproar at the time, but after emotions died down it was agreed upon by all the siblings except one, that "Uncle John" wasn't welcome back for a while. It will be three years this Thanksgiving...