Final answer:
The murder of 14-year-old Emmett Till in Mississippi after allegedly whistling at a white woman.
Step-by-step explanation:
The case you are referring to is the murder of 14-year-old Emmett Till.
In 1955, Emmett Till, a black boy visiting Mississippi from Chicago, was accused of whistling at a white woman. As a result, Till was kidnapped, brutally beaten, and murdered by two white men. The case gained national attention and became a catalyst for the Civil Rights Movement.
This incident highlighted the deep-seated racism and injustice that African Americans faced in the Jim Crow South during that time.