Editor’s note: This is the fourth and final installment of Ms.’ series on antiabortion violence. Read Part 1 here, Part 2 here, and Part 3 here. Antiabortion violence isn’t new. But this year, the terrain shifted in dangerous ways: First, the Trump administration declared it would not enforce the federal law that had helped curtail attacks. Then Minnesota State Rep. Melissa Hortman, a strong advocate for abortion rights, and her husband were brutally murdered.