What is happening here is part of an international trend, which in some countries has gone much further, with the complete collapse of key establishment parties and the rapid emergence of new political forces both on the left and the right.
Since the revolt in Ferguson after the killing of Michael Brown a year ago, Black Lives Matter (BLM) has spread nationally and won limited, but important, victories. For the first time in many years, police officers are facing indictment for murdering civilians.