He's a narcissist. His self esteem is so extremely low that he can't admit people leave his rallies out of boredom. He can't admit to ever being wrong about anything or his fears about himself would be true. He will lie, make excuses, blame others, rant and rave in rage, anything but admit he's wrong. Much scarier than a pathological liar. The way his brain works, he's closer to a serial killer.