I think Harry and Meghan should just ignore it; just know they mock everyone and accept it.
There are three things I do to remove thoughts of people disrespecting me from my head. I pray to Yeshua (Jesus), read books and play computer games. I ask Yeshua to remove those sad thoughts from my mind. Then I play computer games like Tetris or Crossy road on my phone. Then I read through books, the more you read, the happier you will be. Feed you mind with happy thoughts to displace the sad ones. In this modern society, people have little respect for others.