Negan definitely has anger issues.
Little Bunny Nagin
Hoppin through the forest
Scoopin up the good guys
And boppin `em on the head.
OK, I’m having nightmares tonite.
That’s the problem with mankind.
Like what we saw with the governor, an apocalypse will bring out the worst in some people. Ok, Negan is upset his tribe was attacked and killed, but he’s laughing and enjoying the brutality towards Rick’s crew. That’s the manifested evil that resides in some people (cough hillary).