Ultimately, Pelosi is right to insist that a case must be made for beginning impeachment proceedings. But it’s her job to make that case, and failure to do so is a failure of omission. And failure to do so in a timely manner that would curtail some of the worst damage potentially produced by the administration is neglect.
Similarly, if we look at the history of the rise of Nazi Germany can we see how lack of direct resistance allowed Germany to end up in their ultimate situation with Hitler?