Herod murders the boys in Bethlehem.
v.16 Herod, deceived by the fleeing Magi, kills all the boys in the vicinity of Bethlehem under the age of 2 years (based on the time he ascertained from the Magi). Jesus was between 6 and 20 months old (Carson).
v.17-18 This fulfilled an OT prophecy (Jer. 31:15): “A voice is heard in Ramah, weeping and great mourning, Rachel weeping for her children and refusing to be comforted, because the are no more.” Ramah is a village near Bethlehem and near to where Rachel was buried.

Read Matthew 2:16-18