We write to you in anger. Anger at the killing of Alex Pretti, following the killings of Renee Good and Keith Porter in recent weeks. Anger at the rampant lawlessness, racism and xenophobia.  Anger that our streets have been taken over by masked agents who terrorize and kill with impunity. We take inspiration from the tens of thousands of Minnesotans who are resisting, who struck and marched together on Friday to disrupt business as usual. Our unions stand for the common good and against tyranny, violence and repression.