Bandy X. Lee is an expert on understanding violence. Before the 2016 US elections, she coordinated a book with a whole heap of other psychological experts to warn about the dangers of Donald Trump.
Every one of the predictions in that book were correct.
Read that again. This is science at its best: make a set of predictions based on theory and data, and see if they come true.
Now, she is warning that the most dangerous phase of the Trump presidency is upon us.
This is a must-read: calm, factual, accurate, based on science.