At Psychology Today Blogs, Mark Travers discusses anger as a conscious tactic. He focuses on sports, but, given the state of dis coarse discourse, I think his article can help understand some of the political tactic we see daily, particularly on the right.
Buades-Rotger’s research (citation at the link–ed.) measured aggression elicited by being out-competed and found consistent results: Low competitive status (i.e., a lower rank due to losing more often) is linked with higher aggression. “Put bluntly, losers are more aggressive than winners on average,” he clarifies. “And that makes sense: If your rival outperforms you, you must resort to aggression to try and stop them.”