Final answer:
Belief in the hanging of Najibullah by the Taliban is complicated by the chaotic information climate of war-torn Afghanistan and the notorious human rights record and strict governance of the Taliban, leading to skepticism and difficulty in verifying historical events.
Step-by-step explanation:
People may have a hard time believing that the Taliban have hanged Najibullah for a couple of reasons. First, the overthrow of the Taliban regime and the subsequent conflict in Afghanistan led to widespread information chaos, making it difficult to verify occurrences, especially those dating back to the '90s. Additionally, the country's political dynamics involving various tribal factions, such as the Northern Alliance, and the Taliban's use of strict Islamic laws under the Wahhabi branch made it challenging to sieve through what information was propaganda versus fact.
Second, with the Taliban being ousted from Kabul and the continuous war in Afghanistan, reports of historical events during their rule are often questioned. This skepticism is partly due to the critical global view of the Taliban's brutal tactics and strict regime, especially concerning human rights violations. The international community's attempts to grasp the complexities of Afghan history are often hampered by such biases and the fragmented political landscape of the country.