By Jennie Bond Thomas Markle Jnr’s videos reveals exactly why theDuchess of Sussex was right to cut ties with her half-brother. In his sick “shows”, as he calls them, he attacks her with vile insults about her looks, behaviour and even her kids. In a birthday message, he calls Meghan “an old hag” and obliquely refers to her as a “demon reptile snake… with a black, evil soul”. These “shows” are profoundly disturbing: misogynistic, hate-filled monologues punctuated by manic laughter. In one, he appears to try to add fuel to the ludicrous conspiracy theory that Meghan was never pregnant. It is on…