I wanted to call special attention to an article in Mother Jones I linked to earlier this evening. In it, Tim Murphy shows that the historical precedent for President Trump's impeachment isn't Richard Nixon, it's Andrew Johnson. Key paragraph:
The real tragedy of the trial wasn’t poor, pathetic Edmund Ross losing his seat. When the vote fails, Wineapple takes us to places that Kennedy never ventured in his book—churches in Charleston and Memphis where African Americans mourned what they knew they’d lost, steeling themselves for the fight to come. They knew what the impeachment was really about, and they knew who had won. As [Eric Foner, the nation’s foremost Reconstruction scholar,] put it at that panel, “Andrew Johnson was impeached over violating a fairly minor act of Congress, whereas his real crime was trying to deprive 4 million American citizens of all their rights.”
Or more succinctly: "The president was a white nationalist who was nullifying a war." Sound familiar?