A government passes a law increasing taxes on banks. Two days later there are several bank robberies. A politician who opposed the taxes claims that the new law is causing bank robberies. What is wron?

The politician's claim is an example of a post hoc fallacy, which mistakenly attributes causation based solely on the sequence of events. Just because the bank robberies occurred after the tax increase does not mean the tax law caused the robberies; other factors could be at play. Correlation does not imply causation, and establishing a direct link requires more evidence than mere timing.