Final answer:
The provided context does not specifically detail how South Africans obstructed rescue operations following a storm, but refers to the broader issue of inadequate disaster response and management during Hurricane Katrina, affecting primarily poor African Americans in New Orleans.
Step-by-step explanation:
The situation described concerns the aftermath of Hurricane Katrina and its impact on South Africans. However, the details provided in the context are about events in New Orleans, Louisiana, and the broader United States' federal government response, rather than something that exclusively pertains to South Africans.
It is important to clarify that there was no significant mention of South Africans directly standing in the way of rescue operations the day after the storm in the details provided. The closest reference in relation to Africa talks about the African Union's involvement in peacekeeping efforts in a different context separate from natural disasters like Hurricane Katrina.
The response from the U.S. and other entities in the wake of Hurricane Katrina was criticized due to poor coordination and support for the victims, primarily poor African Americans. The fragmented rescue operations, as well as the socio-economic factors, highlighted the existing inequalities and inefficiencies in the disaster management strategies employed at the time.