The "Blowback Mechanism" refers to the unintended consequences that arise from covert operations or foreign interventions. When a government engages in secretive actions, such as supporting certain groups or regimes, it can lead to backlash against that government. This can manifest in various forms, including terrorism or political instability, as affected parties retaliate. An example of blowback can be seen in the context of U.S. foreign policy during the Cold War. Support for certain factions, like the Mujahideen in Afghanistan, ultimately contributed to the rise of extremist groups that targeted the U.S. and its allies, illustrating how initial intentions can lead to unforeseen negative outcomes.