The video in question was from a Twitter account named Cowboys for Trump. The speaker is an Otero County, New Mexico commissioner named Couy Griffin.

In the video, Griffin states that “the only good Democrat is a dead Democrat” to applause, then immediately backed away from the violent rhetoric.

I’ve come to a place where I’ve come to the conclusion that the only good Democrat is a dead Democrat. I don’t say that in the physical sense, and I can already see where the videos getting edited where it says I want to go murder Democrats. No. I say that in the political sense because the Democrat agenda and policy is anti-American right now.

The New Mexico Republican Party indirectly addressed the speaker’s comments, which were made a week prior to Trump’s retweet.

Griffin has also previously made multiple remarks suggesting violence. He often accused several senior Democrats of treason, which he referred to as “a hanging offense,” and warned of possible Civil War. Many such comments have been in reference to the COVID-19 pandemic, as when Griffin said that mask-wearing requirements might be the core divide.

On the day Trump retweeted the video, the US had 1745803 confirmed cases and suffered 102,107 deaths.

The Washington Post – Trump retweets a video saying ‘the only good Democrat is a dead Democrat’
CBS News – Trump shares video of supporter saying “the only good Democrat is a dead Democrat”
KRWG – Commentary: Commissioner Couy Griffin Has A Long History of Violent Speech Against Democrats
Worldometer – Coronavirus, United States