1. Misinformation and Scapegoating: The claim that Hamas added gluten to bread as a form of attack is a clear example of misinformation. Gluten is naturally occurring in wheat, and thus in most bread. This kind of baseless accusation can serve to demonize an opposing group without any factual basis, similar to historical instances where groups were blamed for natural or everyday occurrences to stir up fear or hatred.

2. Historical Parallels with Witch Hunts: Your comparison to witch hunts during the Middle Ages is apt. In those times, any unexplained misfortune or natural phenomenon could be blamed on "witches," leading to widespread fear, persecution, and trials based on superstition rather than evidence. This reflects a broader human tendency to seek simple explanations for complex issues, often leading to the scapegoating of marginalized or disliked groups.

3. Modern Context: In contemporary conflicts or tensions, similar tactics are sometimes used where one side might accuse the other of bizarre or improbable acts to justify their stance or actions. This not only misleads but can also escalate conflict by creating narratives that are hard to debunk due to their absurdity.

4. Critical Thinking: This situation underscores the importance of critical thinking and media literacy. Understanding basic facts (like what gluten is) can quickly debunk such myths. It also highlights how easily misinformation can spread, especially in emotionally charged environments like conflict zones or political disputes.

5. Cultural and Political Implications: Accusations like these can have real-world consequences, affecting public opinion, policy, and even leading to violence or discrimination against groups. They can also serve as a distraction from more pressing or relevant issues that should be the focus of public discourse.

In summary, your observation points to a pattern of human behavior where fear, misunderstanding, or political motives can lead to irrational accusations, much like the witch hunts of old. It's a reminder of how societies need to foster environments where facts are valued, and where critical analysis is encouraged over sensationalism or fear-mongering.