ALEC BALDWIN IS A CRIMINAL MASTER MIND
Alec is probably unironically a textbook psychopath unable to feel remorse or guilt and obsessed with terrorizing the people around him, verbally and physically abusing them. I bet Alex probably strangled a few highway prostitutes before but that was not enough Alec needed to get that ultimate sexual thrill: destroying a beautiful blond women on camera, in front of onlookers, and then getting away with it. The ultimate triumph over his victim.
Once he's pardoned Alec is probably going to write a book about it to cash in on it, relive the moment again, savor all the details, her contorted face, the bafflement of the crew, the invigorating smell of the barrel smoke of his murder weapon. It will be the ultimate humiliation of his victim, something he can masturbate to even years later.