Should we assume that the democrat party is now the assassination/impeachment party?
Impeachment, yes. Assassination, no.
The dems will use impeachment as a political tool (improperly IMHO) against Trump and the GOP, but's just politics in this day and age. But assassination is another story, you shouldn't paint the entire party as deranged, murderous criminals based on the actions of a few. It's true that some on the Left says some vitriolic things bordering on a call for violence, couched in general and unspecific terms, and they should be held accountable in the media for that.