Cops who were unhealthy and out of shape died shortly after having to participate in kinetic police work one day in their carreers, something that police in Blue cities must do every day, thanks to Democratic policies.
That's not the same as a cop being shot in the neck. The only person that happened to on Jan 6, was shot by a Capitol police Lieutenant.
If you want to bring up a historic incident in which Trump supporters were "just as bad," as Democrats, you'll need another one, because that one doesn't work.